Updated 7 h ago

Vulnerability database

Every flaw the U.S. government’s cybersecurity agency (CISA) has confirmed attackers are using, plus the new WordPress plugin and theme bugs published each day, sorted by what they mean for a small business. We refresh it twice a day. If you see something your website or office runs, tell us.

1,762exploited flaws on CISA’s list

34added in the last 30 days

344new WordPress flaws this week

390,080entries in the database

407 results · page 1 of 9

Oct 26, 2026PHP Stale Internal Request-State VulnerabilityCVE-2026-109619 · Websites & servers · PHP Group · reported by security@php.netExploitedCritical 9.2
PHP has various global state that temporarily points into request memory. In some scenarios, global state may not be correctly reset, or may be repopulated after being reset. The global state may then refer to request memory even after it has been freed. Subsequent requests may read or branch on this stale state before it is fully initialized. Multiple strategies can trigger this condition and produce remote code execution (RCE).
Product
PHP
On CISA’s list since
Oct 26, 2026 (federal fix deadline Oct 29, 2026)
What to do
Attackers are using this now. Install PHP Group’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog github.com openwall.com
Oct 23, 2026Collabora Online – Built-in CODE Server OS Command Injection VulnerabilityCVE-2026-110447 · Other software · Collabora · reported by MITREExploitedCritical 9.2
Collabora Collabora Online – Built-in CODE Server when used within the NextCloud platform contains an OS command injection vulnerability that allows for remote code execution when the CODE server isn't running.
Product
Collabora Online – Built-in CODE Server
On CISA’s list since
Oct 23, 2026 (federal fix deadline Oct 26, 2026)
What to do
Attackers are using this now. Install Collabora’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog github.com help.nextcloud.com
Oct 20, 2026Plex Media Server Server-Side Request Forgery (SSRF) VulnerabilityCVE-2026-96655 · Other software · Plex · reported by 9119a7d8-5eab-497f-8521-727c672e3725ExploitedMedium 5.3
Plex Media Server contains a server-side request forgery (SSRF) vulnerability that could allow an authenticated user to request arbitrary internal or external addresses via the '/video/:/transcode/universal' path parameter. This vulnerability can be chained with CVE-2026-96652, CVE-2026-96654, and CVE-2026-96656.
Product
Media Server
On CISA’s list since
Oct 20, 2026 (federal fix deadline Nov 3, 2026)
What to do
Attackers are using this now. Install Plex’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog forums.plex.tv raw.githubusercontent.com
Oct 20, 2026Plex Media Server Server-Side Request Forgery (SSRF) VulnerabilityCVE-2026-96652 · Other software · Plex · reported by 9119a7d8-5eab-497f-8521-727c672e3725ExploitedMedium 5.3
Plex Media Server contains a server-side request forgery (SSRF) vulnerability which could allow an attacker using any X-Plex-Token value to include a full URL in the 'protocol' parameter and force the Plex server to POST to the attacker's chosen destination. This vulnerability can be chained with CVE-2026-96654, CVE-2026-96655, and CVE-2026-96656.
Product
Media Server
On CISA’s list since
Oct 20, 2026 (federal fix deadline Nov 3, 2026)
What to do
Attackers are using this now. Install Plex’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog forums.plex.tv raw.githubusercontent.com
Oct 14, 2026Palo Alto Networks PAN-OS Code Injection VulnerabilityCVE-2026-0322 · Network & remote access · Palo Alto Networks · reported by psirt@paloaltonetworks.comExploitedHigh 8.6
Palo Alto Networks PAN-OS contains a code injection vulnerability that could allow an authenticated attacker with network access to execute arbitrary code with root privileges on the firewall.
Product
PAN-OS
On CISA’s list since
Oct 14, 2026 (federal fix deadline Oct 17, 2026)
What to do
Attackers are using this now. Install Palo Alto Networks’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog security.paloaltonetworks.com cisa.gov
Sep 30, 2026Cisco Catalyst SD-WAN Manager Hex Encoding VulnerabilityCVE-2026-76504 · Network & remote access · Cisco · reported by psirt@cisco.comExploitedCritical 9.8
Cisco Catalyst SD-WAN Manager contains a hex encoding vulnerability that could allow an unauthenticated, remote attacker to access an affected system with privileges of the admin user due to improper handling of URI encoding in an HTTP request.
Product
Catalyst SD-WAN Manager
On CISA’s list since
Sep 30, 2026 (federal fix deadline Oct 3, 2026)
What to do
Attackers are using this now. Install Cisco’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog sec.cloudapps.cisco.com cisa.gov
Sep 29, 2026Apple Multiple Products Out-of-Bounds Write VulnerabilityCVE-2026-86950 · Computers, phones & browsers · Apple · reported by product-security@apple.comExploitedHigh 8.8
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 18.7.11 and iPadOS 18.7.11, iOS 26.7.1 and iPadOS 26.7.1, macOS Sequoia 15.8.1, macOS Tahoe 26.7.1. Processing a maliciously crafted file may lead to arbitrary code execution. Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals on versions of iOS before iOS 27.
Product
Multiple Products
On CISA’s list since
Sep 29, 2026 (federal fix deadline Oct 13, 2026)
What to do
Attackers are using this now. Install Apple’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog support.apple.com support.apple.com
Sep 22, 2026F5 BIG-IP APM Heap-based Buffer Overflow VulnerabilityCVE-2026-94127 · Network & remote access · F5 · reported by f5sirt@f5.comExploitedCritical 9.3
F5 BIG-IP APM contains a heap-based buffer overflow vulnerability when access policy and an OAuth profile are configured on a virtual server. This vulnerability could allow an unauthenticated attacker to perform remote code execution.
Product
BIG-IP APM
On CISA’s list since
Sep 22, 2026 (federal fix deadline Sep 25, 2026)
What to do
Attackers are using this now. Install F5’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog my.f5.com cisa.gov
Sep 21, 2026Zyxel GS1900 Series Switches Stack-Based Buffer Overflow VulnerabilityCVE-2026-7273 · Network & remote access · Zyxel · reported by security@zyxel.com.twExploitedHigh 8.8
Zyxel GS1900 series switches contain a stack-based buffer overflow vulnerability in the CGI program which could allow a LAN-based, unauthenticated attacker to exploit the flaw and potentially execute OS commands via a crafted HTTP request.
Product
GS1900 Series Switches
On CISA’s list since
Sep 21, 2026 (federal fix deadline Sep 24, 2026)
What to do
Attackers are using this now. Install Zyxel’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog zyxel.com cisa.gov
Sep 18, 2026Linux Kernel Out-of-Bounds Write VulnerabilityCVE-2026-53266 · Computers, phones & browsers · Linux · reported by 416baaa9-dc9f-4396-8d5f-8c081fb06d67ExploitedHigh 8.8
Linux Kernel contains an out-of-bounds write vulnerability in the ebtables SNAT target which allows an ARP sender hardware address rewrite to write directly into a nonlinear socket-buffer fragment backed by a splice-imported file page. The impacted product(s) could be end-of-life (EoL) and/or end-of-service (EoS). Users are advised to discontinue use and/or transition to a supported version.
Product
Kernel
On CISA’s list since
Sep 18, 2026 (federal fix deadline Sep 21, 2026)
What to do
Attackers are using this now. Install Linux’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog git.kernel.org git.kernel.org
Sep 9, 2026Fortinet Multiple Products Heap-based Buffer Overflow VulnerabilityCVE-2025-25249 · Network & remote access · Fortinet · reported by psirt@fortinet.comExploitedHigh 8.1
Fortinet FortiOS, FortiSwitchManager, and FortiSASE contain a heap-based buffer overflow vulnerability that allows an attacker to execute unauthorized code or commands via specially crafted packets.
Product
Multiple Products
On CISA’s list since
Sep 9, 2026 (federal fix deadline Sep 12, 2026)
What to do
Attackers are using this now. Install Fortinet’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog fortiguard.fortinet.com cert-portal.siemens.com
Sep 8, 2026N-able N-central Static Code Injection VulnerabilityCVE-2026-86218 · Other software · N-able · reported by a5532a13-c4dd-4202-bef1-e0b8f2f8d12bExploitedCritical 10
N-able N-central contains a static code injection vulnerability that could allow for pre-authentication remote code execution.
Product
N-central
On CISA’s list since
Sep 8, 2026 (federal fix deadline Sep 11, 2026)
What to do
Attackers are using this now. Install N-able’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog me.n-able.com cisa.gov
Sep 8, 2026Microsoft Windows Heap-Based Buffer Overflow VulnerabilityCVE-2026-85880 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comExploitedHigh 7.8
Microsoft Windows Advanced Local Procedure Call contains a heap-based buffer overflow vulnerability that allows an attacker to elevate privileges locally.
Product
Windows
On CISA’s list since
Sep 8, 2026 (federal fix deadline Sep 22, 2026)
What to do
Attackers are using this now. Install Microsoft’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog msrc.microsoft.com cisa.gov
Sep 2, 2026SonicWall SMA1000 Appliances Server-Side Request Forgery VulnerabilityCVE-2026-83548 · Network & remote access · SonicWall · reported by PSIRT@sonicwall.comExploitedCritical 10
SonicWall SMA1000 Appliances contains a server-side request forgery vulnerability that could allow a remote unauthenticated attacker to gain unauthorized access to sensitive functionality and perform unauthorized operations.
Product
SMA1000 Appliances
On CISA’s list since
Sep 2, 2026 (federal fix deadline Sep 5, 2026)
What to do
Attackers are using this now. Install SonicWall’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog psirt.global.sonicwall.com cisa.gov
Aug 26, 2026Linux Kernel Out-of-Bounds Write VulnerabilityCVE-2022-0995 · Computers, phones & browsers · Linux · reported by Red HatExploitedHigh 7.8
Linux Kernel contains an out-of-bounds memory write vulnerability which could allow a local user to gain privileged access or cause a denial of service on the system.
Product
Kernel
On CISA’s list since
Aug 26, 2026 (federal fix deadline Aug 29, 2026)
What to do
Attackers are using this now. Install Linux’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog packetstormsecurity.com packetstormsecurity.com
Aug 24, 2026Oracle HTTP Server and Oracle Weblogic Server Proxy Plug-in Improper Access Control VulnerabilityCVE-2026-21962 · Websites & servers · Oracle · reported by secalert_us@oracle.comExploitedCritical 10
Oracle HTTP Server and Oracle Weblogic Server Proxy Plug-in contain an improper access control vulnerability that can result in unauthorized creation, deletion or modification access to critical data as well as unauthorized access to critical data or complete access to all Oracle HTTP Server and Oracle Weblogic Server Proxy Plug-in accessible data.
Product
HTTP Server and Oracle Weblogic Server Proxy Plug-in
On CISA’s list since
Aug 24, 2026 (federal fix deadline Aug 27, 2026)
What to do
Attackers are using this now. Install Oracle’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog oracle.com github.com
Aug 19, 2026MLflow Server-Side Request Forgery VulnerabilityCVE-2026-64849 · Other software · MLflow · reported by GitHubExploitedCritical 9.3
MLflow contains a server-side request forgery vulnerability that can allow attackers to reach internal or cloud metadata services and receive response_status and response_body.
Product
MLflow
On CISA’s list since
Aug 19, 2026 (federal fix deadline Sep 2, 2026)
What to do
Attackers are using this now. Install MLflow’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog github.com github.com
Aug 17, 2026Ray-Project Ray Code Injection VulnerabilityCVE-2025-62593 · Other software · Ray-Project · reported by GitHubExploitedCritical 9.4
Ray-Project Ray contains a code injection vulnerability that could allow remote code execution. Developers using Ray as a development tool may be exposed to this vulnerability exploitable through Firefox and Safari.
Product
Ray
On CISA’s list since
Aug 17, 2026 (federal fix deadline Aug 20, 2026)
What to do
Attackers are using this now. Install Ray-Project’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog github.com github.com
Aug 11, 2026Microsoft Windows Ancillary Function Driver for WinSock Use-After-Free VulnerabilityCVE-2026-68820 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comExploitedHigh 7
Microsoft Windows Ancillary Function Driver for WinSock contains a use-after-free vulnerability that allows an authorized attacker to elevate privileges locally.
Product
Windows Ancillary Function Driver for WinSock
On CISA’s list since
Aug 11, 2026 (federal fix deadline Aug 25, 2026)
What to do
Attackers are using this now. Install Microsoft’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog msrc.microsoft.com cisa.gov
Aug 4, 2026N-able N-central Authentication Bypass Using an Alternate Path or Channel VulnerabilityCVE-2026-18556 · Other software · N-able · reported by a5532a13-c4dd-4202-bef1-e0b8f2f8d12bExploitedHigh 8.2
N-able N-central contains an authentication bypass using an alternate path or channel that allows for authentication bypass.
Product
N-central
On CISA’s list since
Aug 4, 2026 (federal fix deadline Aug 7, 2026)
What to do
Attackers are using this now. Install N-able’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog uptime.n-able.com cisa.gov
Aug 3, 2026N-able N-central Authentication Bypass Using an Alternate Path or Channel VulnerabilityCVE-2026-18577 · Other software · N-able · reported by a5532a13-c4dd-4202-bef1-e0b8f2f8d12bExploitedHigh 8.2
N-able N-central contains an authentication bypass using an alternate path or channel allows for authentication bypass and account takeover in N-central. This vulnerability is the result of an incomplete patch for CVE-2026-18556.
Product
N-central
On CISA’s list since
Aug 3, 2026 (federal fix deadline Aug 6, 2026)
What to do
Attackers are using this now. Install N-able’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog documentation.n-able.com status.n-able.com
Jul 29, 2026Cisco Secure Firewall Management Center Use of Hard-coded Password VulnerabilityCVE-2026-20316 · Network & remote access · Cisco · reported by psirt@cisco.comExploitedRansomwareMedium 5.3
Cisco Secure Firewall Management Center (FMC) formerly known as Firepower Management Center contains a use of hard-coded password vulnerability that could allow an unauthenticated, remote attacker to log in to an affected device using a low-privileged account to access sensitive data within the impacted systems.
Product
Secure Firewall Management Center (FMC)
On CISA’s list since
Jul 29, 2026 (federal fix deadline Aug 1, 2026)
What to do
Attackers are using this now. Install Cisco’s update today (ransomware groups use this one). If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog sec.cloudapps.cisco.com cisa.gov
Jul 27, 2026Arista VeloCloud Orchestrator On-Prem OS Command Injection VulnerabilityCVE-2026-16812 · Other software · Arista · reported by psirt@arista.comExploitedCritical 10
Arista VeloCloud Orchestrator On-Prem contains an OS command injection vulnerability that may allow a remote attacker to access privileged internal functionality and impact the VCO host. Successful exploitation may compromise the confidentiality, integrity, and availability of the orchestrator and data managed by the orchestrator.
Product
VeloCloud Orchestrator
On CISA’s list since
Jul 27, 2026 (federal fix deadline Jul 30, 2026)
What to do
Attackers are using this now. Install Arista’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog arista.com cisa.gov
Jul 21, 2026DD-WRT Stack-Based Buffer Overflow VulnerabilityCVE-2021-27137 · Other software · DD-WRT · reported by MITREExploitedHigh 8.1
DD-WRT contains a stack-based buffer overflow vulnerability that could allow an unauthenticated attacker to overflow an internal buffer used by UPnP and trigger a code execution vulnerability.
Product
DD-WRT
On CISA’s list since
Jul 21, 2026 (federal fix deadline Jul 24, 2026)
What to do
Attackers are using this now. Install DD-WRT’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog securityaffairs.com ssd-disclosure.com
Jul 15, 2026Oracle E-Business Suite Improper Privilege Management VulnerabilityCVE-2026-46817 · Other software · Oracle · reported by secalert_us@oracle.comExploitedCritical 9.8
Oracle E-Business Suite contains an improper privilege management vulnerability that allows an unauthenticated attacker with network access via HTTP to compromise Oracle Payments. Successful attacks of this vulnerability can result in takeover of Oracle Payments.
Product
E-Business Suite
On CISA’s list since
Jul 15, 2026 (federal fix deadline Jul 18, 2026)
What to do
Attackers are using this now. Install Oracle’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog oracle.com cisa.gov
Jul 14, 2026SonicWall SMA1000 Appliances Server-Side Request Forgery VulnerabilityCVE-2026-15409 · Network & remote access · SonicWall · reported by PSIRT@sonicwall.comExploitedRansomwareCritical 10
SonicWall SMA1000 Appliances contain a server-side request forgery vulnerability that could allow a remote unauthenticated attacker to potentially cause the appliance to make requests to unintended location.
Product
SMA1000 Appliances
On CISA’s list since
Jul 14, 2026 (federal fix deadline Jul 17, 2026)
What to do
Attackers are using this now. Install SonicWall’s update today (ransomware groups use this one). If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog psirt.global.sonicwall.com cisa.gov
Jul 13, 2026Cisco IOS Cross-Site Request Forgery VulnerabilityCVE-2008-4128 · Network & remote access · Cisco · reported by MITREExploitedHigh 8.1
Cisco IOS 12.4 contains multiple cross-site forgery vulnerabilities that allows remote attackers to execute arbitrary commands via (1) a certain "show privilege" command to the /level/15/exec/- URI, and (2) a certain "alias exec" command to the /level/15/exec/-/configure/http URI.
Product
IOS
On CISA’s list since
Jul 13, 2026 (federal fix deadline Jul 16, 2026)
What to do
Attackers are using this now. Install Cisco’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog jbrownsec.blogspot.com securityfocus.com
Jul 7, 2026Langflow Authorization Bypass Through User-Controlled Key VulnerabilityCVE-2026-55255 · Other software · Langflow · reported by GitHubExploitedHigh 8.4
Langflow contains an authorization bypass through user-controlled key vulnerability which allows an authenticated attacker to execute any flow belonging to another user by specifying the victim's flow ID in the request.
Product
Langflow
On CISA’s list since
Jul 7, 2026 (federal fix deadline Jul 10, 2026)
What to do
Attackers are using this now. Install Langflow’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog github.com github.com
Jun 25, 2026Cisco Unified Communications Manager Server-Side Request Forgery (SSRF) VulnerabilityCVE-2026-20230 · Network & remote access · Cisco · reported by psirt@cisco.comExploitedHigh 8.6
Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) contain a server-side request forgery (SSRF) Vulnerability that could allow an unauthenticated, remote attacker to write files to the underlying operating system that could be used later to elevate to root.
Product
Unified Communications Manager
On CISA’s list since
Jun 25, 2026 (federal fix deadline Jun 28, 2026)
What to do
Attackers are using this now. Install Cisco’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog sec.cloudapps.cisco.com denizhalil.com
Jun 15, 2026Cisco Catalyst SD-WAN Manager Directory or Path Traversal VulnerabilityCVE-2026-20262 · Network & remote access · Cisco · reported by psirt@cisco.comExploitedMedium 6.5
Cisco Catalyst SD-WAN Manager contains a directory or path traversal vulnerability that could allow an authenticated, remote attacker to create a file or overwrite any file on the filesystem of an affected system.
Product
Catalyst SD-WAN Manager
On CISA’s list since
Jun 15, 2026 (federal fix deadline Jun 29, 2026)
What to do
Attackers are using this now. Install Cisco’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog sec.cloudapps.cisco.com cisa.gov
Jun 9, 2026Google Chromium V8 Out-of-Bounds Read and Write VulnerabilityCVE-2026-11645 · Computers, phones & browsers · Google · reported by chrome-cve-admin@google.comExploitedHigh 8.8
Google Chromium V8 out-of-bounds read and write vulnerability that could allow a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.
Product
Chromium V8
On CISA’s list since
Jun 9, 2026 (federal fix deadline Jun 23, 2026)
What to do
Attackers are using this now. Install Google’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog chromereleases.googleblog.com issues.chromium.org
Jun 9, 2026Cisco Catalyst SD-WAN Manager Improper Encoding or Escaping of Output VulnerabilityCVE-2026-20245 · Network & remote access · Cisco · reported by psirt@cisco.comExploitedHigh 7.8
Cisco Catalyst SD-WAN Manager formerly SD-WAN vManage contains an improper encoding or escaping of output vulnerability. This vulnerability could allow an authenticated, local attacker to execute arbitrary commands as root by supplying a crafted file to the affected system.
Product
Catalyst SD-WAN Manager
On CISA’s list since
Jun 9, 2026 (federal fix deadline Jun 23, 2026)
What to do
Attackers are using this now. Install Cisco’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog sec.cloudapps.cisco.com sec.cloudapps.cisco.com
Jun 5, 2026SolarWinds Serv-U Uncontrolled Resource Consumption VulnerabilityCVE-2026-28318 · Other software · SolarWinds · reported by psirt@solarwinds.comExploitedHigh 7.5
SolarWinds Serv-U contains an uncontrolled resource consumption vulnerability that allows specially crafted POST requests using the Content-Encoding: deflate header to crash the Serv-U service without authentication.
Product
Serv-U
On CISA’s list since
Jun 5, 2026 (federal fix deadline Jun 19, 2026)
What to do
Attackers are using this now. Install SolarWinds’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog documentation.solarwinds.com solarwinds.com
May 29, 2026Palo Alto Networks PAN-OS Authentication Bypass VulnerabilityCVE-2026-0257 · Network & remote access · Palo Alto Networks · reported by psirt@paloaltonetworks.comExploitedRansomwareHigh 7.8
Palo Alto Networks PAN-OS contains an authentication bypass vulnerability that allows attackers to bypass security restrictions and establish an unauthorized VPN connection.
Product
PAN-OS
On CISA’s list since
May 29, 2026 (federal fix deadline Jun 1, 2026)
What to do
Attackers are using this now. Install Palo Alto Networks’s update today (ransomware groups use this one). If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog security.paloaltonetworks.com cert-portal.siemens.com
May 21, 2026Trend Micro Apex One (On-Premise) Directory Traversal VulnerabilityCVE-2026-34926 · Other software · Trend Micro · reported by security@trendmicro.comExploitedMedium 6.7
Trend Micro Apex One (on-premise) contains a directory traversal vulnerability that could allow a pre-authenticated local attacker to modify a key table on the server to inject malicious code to deploy to agents on affected installations.
Product
Apex One
On CISA’s list since
May 21, 2026 (federal fix deadline Jun 4, 2026)
What to do
Attackers are using this now. Install Trend Micro’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog jvn.jp success.trendmicro.com
May 20, 2026Adobe Acrobat and Reader Heap-Based Buffer Overflow VulnerabilityCVE-2009-3459 · Email & office · Adobe · reported by AdobeExploitedHigh 8.8
Adobe Acrobat and Reader contain a heap-based buffer overflow vulnerability which could allow remote attackers to execute arbitrary code via a crafted PDF file that triggers memory corruption.
Product
Acrobat and Reader
On CISA’s list since
May 20, 2026 (federal fix deadline Jun 3, 2026)
What to do
Attackers are using this now. Install Adobe’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog blogs.adobe.com isc.sans.org
May 20, 2026Microsoft Internet Explorer Use-After-Free VulnerabilityCVE-2010-0249 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comExploitedHigh 8.8
Microsoft Internet Explorer contains an use-after-free vulnerability that could allow remote attackers to execute arbitrary code by accessing a pointer associated with a deleted object. The impacted product could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization.
Product
Internet Explorer
On CISA’s list since
May 20, 2026 (federal fix deadline Jun 3, 2026)
What to do
Attackers are using this now. Install Microsoft’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog blogs.technet.com news.cnet.com
May 20, 2026Microsoft Internet Explorer Use-After-Free VulnerabilityCVE-2010-0806 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comExploitedHigh 8.8
Microsoft Internet Explorer contains an use-after-free vulnerability that could allow remote attackers to execute arbitrary code via vectors involving access to an invalid pointer after the deletion of an object. The impacted product could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization.
Product
Internet Explorer
On CISA’s list since
May 20, 2026 (federal fix deadline Jun 3, 2026)
What to do
Attackers are using this now. Install Microsoft’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog blogs.technet.com osvdb.org
May 15, 2026Microsoft Exchange Server Cross-Site Scripting VulnerabilityCVE-2026-42897 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comExploitedHigh 8.1
Microsoft Exchange Server contains a cross-site scripting vulnerability during web page generation in Outlook Web Access and when certain interaction conditions are met, arbitrary JavaScript can be executed in the browser context.
Product
Microsoft
On CISA’s list since
May 15, 2026 (federal fix deadline May 29, 2026)
What to do
Attackers are using this now. Install Microsoft’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog msrc.microsoft.com cisa.gov
May 14, 2026Cisco Catalyst SD-WAN Controller Authentication Bypass VulnerabilityCVE-2026-20182 · Network & remote access · Cisco · reported by psirt@cisco.comExploitedCritical 10
Cisco Catalyst SD-WAN Controller & Manager contain an authentication bypass vulnerability that allows an unauthenticated, remote attacker to bypass authentication and obtain administrative privileges on an affected system.
Product
Catalyst SD-WAN
On CISA’s list since
May 14, 2026 (federal fix deadline May 17, 2026)
What to do
Attackers are using this now. Install Cisco’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog sec.cloudapps.cisco.com sec.cloudapps.cisco.com
May 6, 2026Palo Alto Networks PAN-OS Out-of-bounds Write VulnerabilityCVE-2026-0300 · Network & remote access · Palo Alto Networks · reported by psirt@paloaltonetworks.comExploitedCritical 9.3
Palo Alto Networks PAN-OS contains an out-of-bounds write vulnerability in the User-ID Authentication Portal (aka Captive Portal) service that can allow an unauthenticated attacker to execute arbitrary code with root privileges on the PA-Series and VM-Series firewalls by sending specially crafted packets.
Product
PAN-OS
On CISA’s list since
May 6, 2026 (federal fix deadline May 9, 2026)
What to do
Attackers are using this now. Install Palo Alto Networks’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog security.paloaltonetworks.com cert-portal.siemens.com
Apr 24, 2026D-Link DIR-823X Command Injection VulnerabilityCVE-2025-29635 · Network & remote access · D-Link · reported by MITREExploitedHigh 7.2
D-Link DIR-823X contains a command injection vulnerability that allows an authorized attacker to execute arbitrary commands on remote devices by sending a POST request to /goform/set_prohibiting via the corresponding function. The impacted product could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization.
Product
DIR-823X
On CISA’s list since
Apr 24, 2026 (federal fix deadline May 8, 2026)
What to do
Attackers are using this now. Install D-Link’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog github.com akamai.com
Apr 20, 2026Cisco Catalyst SD-WAN Manager Incorrect Use of Privileged APIs VulnerabilityCVE-2026-20122 · Network & remote access · Cisco · reported by psirt@cisco.comExploitedMedium 5.4
Cisco Catalyst SD-WAN Manager contains an incorrect use of privileged APIs vulnerability due to improper file handling on the API interface of an affected system. An attacker could exploit this vulnerability by uploading a malicious file on the local file system. A successful exploit could allow the attacker to overwrite arbitrary files on the affected system and gain vmanage user privileges.
Product
Catalyst SD-WAN Manger
On CISA’s list since
Apr 20, 2026 (federal fix deadline Apr 23, 2026)
What to do
Attackers are using this now. Install Cisco’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog sec.cloudapps.cisco.com cisa.gov
Apr 20, 2026Cisco Catalyst SD-WAN Manager Exposure of Sensitive Information to an Unauthorized Actor VulnerabilityCVE-2026-20133 · Network & remote access · Cisco · reported by psirt@cisco.comExploitedMedium 6.5
Cisco Catalyst SD-WAN Manager contains an exposure of sensitive information to an unauthorized actor vulnerability that could allow remote attackers to view sensitive information on affected systems.
Product
Catalyst SD-WAN Manager
On CISA’s list since
Apr 20, 2026 (federal fix deadline Apr 23, 2026)
What to do
Attackers are using this now. Install Cisco’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog sec.cloudapps.cisco.com cisa.gov
Apr 20, 2026Synacor Zimbra Collaboration Suite (ZCS) Cross-site Scripting VulnerabilityCVE-2025-48700 · Email & office · Synacor · reported by MITREExploitedMedium 6.1
Synacor Zimbra Collaboration Suite (ZCS) contains a cross-site scripting vulnerability that could allow attackers to execute arbitrary JavaScript within the user's session, potentially leading to unauthorized access to sensitive information.
Product
Zimbra Collaboration Suite (ZCS)
On CISA’s list since
Apr 20, 2026 (federal fix deadline Apr 23, 2026)
What to do
Attackers are using this now. Install Synacor’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog wiki.zimbra.com wiki.zimbra.com
Apr 20, 2026Cisco Catalyst SD-WAN Manager Storing Passwords in a Recoverable Format VulnerabilityCVE-2026-20128 · Network & remote access · Cisco · reported by psirt@cisco.comExploitedHigh 7.5
Cisco Catalyst SD-WAN Manager contains a storing passwords in a recoverable format vulnerability that allows an authenticated, local attacker to gain DCA user privileges by accessing a credential file for the DCA user on the filesystem as a low-privileged user.
Product
Catalyst SD-WAN Manager
On CISA’s list since
Apr 20, 2026 (federal fix deadline Apr 23, 2026)
What to do
Attackers are using this now. Install Cisco’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog sec.cloudapps.cisco.com cisa.gov
Apr 13, 2026Microsoft Windows Out-of-Bounds Read VulnerabilityCVE-2023-36424 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comExploitedHigh 7.8
Microsoft Windows Common Log File System Driver contains an out-of-bounds read vulnerability that could allow a threat actor for privileges escalation
Product
Windows
On CISA’s list since
Apr 13, 2026 (federal fix deadline Apr 27, 2026)
What to do
Attackers are using this now. Install Microsoft’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog msrc.microsoft.com msrc.microsoft.com
Apr 13, 2026Adobe Acrobat Use-After-Free VulnerabilityCVE-2020-9715 · Email & office · Adobe · reported by AdobeExploitedHigh 7.8
Adobe Acrobat contains a use-after-free vulnerability that allows for code execution
Product
Acrobat
On CISA’s list since
Apr 13, 2026 (federal fix deadline Apr 27, 2026)
What to do
Attackers are using this now. Install Adobe’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog blog.exodusintel.com helpx.adobe.com
Apr 1, 2026Google Dawn Use-After-Free VulnerabilityCVE-2026-5281 · Computers, phones & browsers · Google · reported by chrome-cve-admin@google.comExploitedHigh 8.8
Google Dawn contains an use-after-free vulnerability that could allow a remote attacker who had compromised the renderer process to execute arbitrary code via a crafted HTML page. This vulnerability could affect multiple Chromium-based products including, but not limited to, Google Chrome, Microsoft Edge, and Opera.
Product
Dawn
On CISA’s list since
Apr 1, 2026 (federal fix deadline Apr 15, 2026)
What to do
Attackers are using this now. Install Google’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog chromereleases.googleblog.com issues.chromium.org
Mar 30, 2026Citrix NetScaler Out-of-Bounds Read VulnerabilityCVE-2026-3055 · Network & remote access · Citrix · reported by 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5ExploitedCritical 9.3
Citrix NetScaler ADC (formerly Citrix ADC), NetScaler Gateway (formerly Citrix Gateway) and NetScaler ADC FIPS and NDcPP contain an out-of-bounds reads vulnerability when configured as a SAML IDP leading to memory overread.
Product
NetScaler
On CISA’s list since
Mar 30, 2026 (federal fix deadline Apr 2, 2026)
What to do
Attackers are using this now. Install Citrix’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog support.citrix.com labs.watchtowr.com

Where this comes from: the exploited list is CISA’s Known Exploited Vulnerabilities catalog. Everything else is the whole National Vulnerability Database, where each record is published by the team that found the bug (Wordfence, Patchstack, WPScan, the vendors themselves and others); we show who. Exploit odds are FIRST’s EPSS, updated daily. Titles and categories are ours, so check the linked record before acting on a detail. For a write-up of the big ones, see our advisories. Every vendor, and every WordPress plugin and theme with a recorded flaw, also has its own page. All of it is free to reuse as JSON, CSV or RSS.

Weekly security brief

The flaws that hit local websites, every Friday.

One short email: what got exploited this week, which WordPress plugins broke, and what to check. Unsubscribe in one click.

Vulnerability database

The flaws that hit local websites, every Friday.

Tell us what you're building.