Critical security advisoryCriticalFlagged by our vulnerability database: PHP2Shell is on CISA’s exploited list. Most WordPress hosting runs PHP. See if your site is affectedFlagged by our vulnerability database: PHP2Shell is being exploited. DetailsExploited: PHP2Shell. Check your site
HuttenlocherTechnologies
Updated 3 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

33 results

  • Oct 20, 2026Siemens Software Center Uncontrolled Search Path Element VulnerabilityCVE-2026-110936 · Other software · Siemens · reported by productcert@siemens.comExploitedHigh 8.4

    Siemens Software Center contains an uncontrolled search path element vulnerability that could allow an authenticated local attacker to place a specially crafted DLL in a directory that the application searches, leading to arbitrary code execution with the privileges of the affected application.

    Product
    Software Center
    On CISA’s list since
    Oct 20, 2026 (federal fix deadline Nov 3, 2026)
    What to do
    Attackers are using this now. Install Siemens’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
  • Sep 9, 2026Cisco Firewall Management Center Authentication Bypass Using an Alternate Path or Channel VulnerabilityCVE-2026-20079 · Network & remote access · Cisco · reported by psirt@cisco.comExploitedCritical 10

    Cisco Secure Firewall Management Center (FMC) Software and Cisco Security Cloud Control (SCC) Firewall Management contain an authentication Bypass using an alternate path or channel vulnerability that could allow an unauthenticated, remote attacker to bypass authentication and execute script files on an affected device to obtain root access to the underlying operating system.

    Product
    Secure Firewall Management Center (FMC) and Security Cloud Control (SCC) Firewall Management
    On CISA’s list since
    Sep 9, 2026 (federal fix deadline Sep 12, 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.
  • Aug 18, 2026Broadcom VMware vCenter Path Traversal VulnerabilityCVE-2026-59310 · Other software · Broadcom · reported by security@vmware.comExploitedRansomwareCritical 9.8

    Broadcom VMware vCenter contains a path traversal vulnerability which could allow a threat actor with network access to vCenter to execute arbitrary code.

    Product
    VMware vCenter
    On CISA’s list since
    Aug 18, 2026 (federal fix deadline Aug 21, 2026)
    What to do
    Attackers are using this now. Install Broadcom’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.
  • 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.
  • Mar 19, 2026Cisco Secure Firewall Management Center (FMC) Software and Cisco Security Cloud Control (SCC) Firewall Management Deserialization of Untrusted Data VulnerabilityCVE-2026-20131 · Network & remote access · Cisco · reported by psirt@cisco.comExploitedRansomwareCritical 10

    Cisco Secure Firewall Management Center (FMC) Software and Cisco Security Cloud Control (SCC) Firewall Management contain a deserialization of untrusted data vulnerability in the web-based management interface that could allow an unauthenticated, remote attacker to execute arbitrary Java code as root on an affected device.

    Product
    Secure Firewall Management Center (FMC)
    On CISA’s list since
    Mar 19, 2026 (federal fix deadline Mar 22, 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.
  • Jan 23, 2026Broadcom VMware vCenter Server Out-of-bounds Write VulnerabilityCVE-2024-37079 · Other software · Broadcom · reported by security@vmware.comExploitedCritical 9.8

    Broadcom VMware vCenter Server contains an out-of-bounds write vulnerability in the implementation of the DCERPC protocol. This could allow a malicious actor with network access to vCenter Server to send specially crafted network packets, potentially leading to remote code execution.

    Product
    VMware vCenter Server
    On CISA’s list since
    Jan 23, 2026 (federal fix deadline Feb 13, 2026)
    What to do
    Attackers are using this now. Install Broadcom’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
  • May 2, 2025Commvault Command Center Path Traversal VulnerabilityCVE-2025-34028 · Other software · Commvault · reported by VulnCheckExploitedCritical 9.3

    Commvault Command Center contains a path traversal vulnerability that allows a remote, unauthenticated attacker to execute arbitrary code.

    Product
    Command Center
    On CISA’s list since
    May 2, 2025 (federal fix deadline May 23, 2025)
    What to do
    Attackers are using this now. Install Commvault’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
  • Feb 25, 2025Microsoft Partner Center Improper Access Control VulnerabilityCVE-2024-49035 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comExploitedHigh 8.7

    Microsoft Partner Center contains an improper access control vulnerability that allows an attacker to escalate privileges.

    Product
    Partner Center
    On CISA’s list since
    Feb 25, 2025 (federal fix deadline Mar 18, 2025)
    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.
  • Nov 20, 2024VMware vCenter Server Heap-Based Buffer Overflow VulnerabilityCVE-2024-38812 · Other software · VMware · reported by security@vmware.comExploitedCritical 9.8

    VMware vCenter Server contains a heap-based buffer overflow vulnerability in the implementation of the DCERPC protocol. This vulnerability could allow an attacker with network access to the vCenter Server to execute remote code by sending a specially crafted packet.

    Product
    vCenter Server
    On CISA’s list since
    Nov 20, 2024 (federal fix deadline Dec 11, 2024)
    What to do
    Attackers are using this now. Install VMware’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
  • Nov 20, 2024VMware vCenter Server Privilege Escalation VulnerabilityCVE-2024-38813 · Other software · VMware · reported by security@vmware.comExploitedHigh 7.5

    VMware vCenter contains an improper check for dropped privileges vulnerability. This vulnerability could allow an attacker with network access to the vCenter Server to escalate privileges to root by sending a specially crafted packet.

    Product
    vCenter Server
    On CISA’s list since
    Nov 20, 2024 (federal fix deadline Dec 11, 2024)
    What to do
    Attackers are using this now. Install VMware’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
  • Nov 12, 2024Atlassian Jira Server and Data Center Path Traversal VulnerabilityCVE-2021-26086 · Websites & servers · Atlassian · reported by security@atlassian.comExploitedMedium 5.3

    Atlassian Jira Server and Data Center contain a path traversal vulnerability that allows a remote attacker to read particular files in the /WEB-INF/web.xml endpoint.

    Product
    Jira Server and Data Center
    On CISA’s list since
    Nov 12, 2024 (federal fix deadline Dec 3, 2024)
    What to do
    Attackers are using this now. Install Atlassian’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
  • Jul 17, 2024VMware vCenter Server Incorrect Default File Permissions Vulnerability CVE-2022-22948 · Other software · VMware · reported by security@vmware.comExploitedMedium 6.5

    VMware vCenter Server contains an incorrect default file permissions vulnerability that allows a remote, privileged attacker to gain access to sensitive information.

    Product
    vCenter Server
    On CISA’s list since
    Jul 17, 2024 (federal fix deadline Aug 7, 2024)
    What to do
    Attackers are using this now. Install VMware’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
  • Jan 24, 2024Atlassian Confluence Data Center and Server Template Injection VulnerabilityCVE-2023-22527 · Websites & servers · Atlassian · reported by security@atlassian.comExploitedRansomwareCritical 9.8

    Atlassian Confluence Data Center and Server contain an unauthenticated OGNL template injection vulnerability that can lead to remote code execution.

    Product
    Confluence Data Center and Server
    On CISA’s list since
    Jan 24, 2024 (federal fix deadline Feb 14, 2024)
    What to do
    Attackers are using this now. Install Atlassian’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.
  • Jan 22, 2024VMware vCenter Server Out-of-Bounds Write VulnerabilityCVE-2023-34048 · Other software · VMware · reported by security@vmware.comExploitedCritical 9.8

    VMware vCenter Server contains an out-of-bounds write vulnerability in the implementation of the DCERPC protocol that allows an attacker to conduct remote code execution.

    Product
    vCenter Server
    On CISA’s list since
    Jan 22, 2024 (federal fix deadline Feb 12, 2024)
    What to do
    Attackers are using this now. Install VMware’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
  • Nov 7, 2023Atlassian Confluence Data Center and Server Improper Authorization VulnerabilityCVE-2023-22518 · Websites & servers · Atlassian · reported by security@atlassian.comExploitedRansomwareCritical 9.8

    Atlassian Confluence Data Center and Server contain an improper authorization vulnerability that can result in significant data loss when exploited by an unauthenticated attacker. There is no impact on confidentiality since the attacker cannot exfiltrate any data.

    Product
    Confluence Data Center and Server
    On CISA’s list since
    Nov 7, 2023 (federal fix deadline Nov 28, 2023)
    What to do
    Attackers are using this now. Install Atlassian’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.
  • Oct 5, 2023Atlassian Confluence Data Center and Server Broken Access Control VulnerabilityCVE-2023-22515 · Websites & servers · Atlassian · reported by security@atlassian.comExploitedRansomwareCritical 9.8

    Atlassian Confluence Data Center and Server contains a broken access control vulnerability that allows an attacker to create unauthorized Confluence administrator accounts and access Confluence.

    Product
    Confluence Data Center and Server
    On CISA’s list since
    Oct 5, 2023 (federal fix deadline Oct 13, 2023)
    What to do
    Attackers are using this now. Install Atlassian’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.
  • Sep 30, 2022Atlassian Bitbucket Server and Data Center Command Injection VulnerabilityCVE-2022-36804 · Websites & servers · Atlassian · reported by security@atlassian.comExploitedHigh 8.8

    Multiple API endpoints of Atlassian Bitbucket Server and Data Center contain a command injection vulnerability where an attacker with access to a public Bitbucket repository, or with read permissions to a private one, can execute code by sending a malicious HTTP request.

    Product
    Bitbucket Server and Data Center
    On CISA’s list since
    Sep 30, 2022 (federal fix deadline Oct 21, 2022)
    What to do
    Attackers are using this now. Install Atlassian’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
  • Jun 2, 2022Atlassian Confluence Server and Data Center Remote Code Execution VulnerabilityCVE-2022-26134 · Websites & servers · Atlassian · reported by security@atlassian.comExploitedRansomwareCritical 9.8

    Atlassian Confluence Server and Data Center contain a remote code execution vulnerability that allows for an unauthenticated attacker to perform remote code execution.

    Product
    Confluence Server/Data Center
    On CISA’s list since
    Jun 2, 2022 (federal fix deadline Jun 6, 2022)
    What to do
    Attackers are using this now. Install Atlassian’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.
  • Mar 25, 2022Cisco Prime Data Center Network Manager (DCNM) Directory Traversal VulnerabilityCVE-2015-0666 · Network & remote access · Cisco · reported by psirt@cisco.comExploitedHigh 7.5

    Directory traversal vulnerability in the fmserver servlet in Cisco Prime Data Center Network Manager (DCNM) allows remote attackers to read arbitrary files.

    Product
    Prime Data Center Network Manager (DCNM)
    On CISA’s list since
    Mar 25, 2022 (federal fix deadline Apr 15, 2022)
    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.
  • Mar 25, 2022Microsoft Kerberos Key Distribution Center (KDC) Privilege Escalation VulnerabilityCVE-2014-6324 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comExploitedHigh 8.8

    The Kerberos Key Distribution Center (KDC) in Microsoft allows remote authenticated domain users to obtain domain administrator privileges.

    Product
    Kerberos Key Distribution Center (KDC)
    On CISA’s list since
    Mar 25, 2022 (federal fix deadline Apr 15, 2022)
    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.
  • Mar 7, 2022VMware vCenter Server and Cloud Foundation Server Side Request Forgery (SSRF) VulnerabilityCVE-2021-21973 · Other software · VMware · reported by security@vmware.comExploitedMedium 5.3

    VMware vCenter Server and Cloud Foundation Server contain a SSRF vulnerability due to improper validation of URLs in a vCenter Server plugin. This allows for information disclosure.

    Product
    vCenter Server and Cloud Foundation
    On CISA’s list since
    Mar 7, 2022 (federal fix deadline Mar 21, 2022)
    What to do
    Attackers are using this now. Install VMware’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
  • Mar 7, 2022Atlassian Jira Server and Data Center Server-Side Template Injection VulnerabilityCVE-2019-11581 · Websites & servers · Atlassian · reported by security@atlassian.comExploitedCritical 9.8

    Atlassian Jira Server and Data Center contain a server-side template injection vulnerability which can allow for remote code execution.

    Product
    Jira Server and Data Center
    On CISA’s list since
    Mar 7, 2022 (federal fix deadline Sep 7, 2022)
    What to do
    Attackers are using this now. Install Atlassian’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
  • Jan 10, 2022VMware vCenter Server Improper Access ControlCVE-2021-22017 · Other software · VMware · reported by security@vmware.comExploitedMedium 5.3

    Rhttproxy as used in vCenter Server contains a vulnerability due to improper implementation of URI normalization.

    Product
    vCenter Server
    On CISA’s list since
    Jan 10, 2022 (federal fix deadline Jan 24, 2022)
    What to do
    Attackers are using this now. Install VMware’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
  • Dec 1, 2021Zoho ManageEngine ServiceDesk Plus Remote Code Execution VulnerabilityCVE-2021-44077 · Email & office · Zoho · reported by MITREExploitedCritical 9.8

    Zoho ManageEngine ServiceDesk Plus before 11306, ServiceDesk Plus MSP before 10530, and SupportCenter Plus before 11014 are vulnerable to unauthenticated remote code execution

    Product
    ManageEngine ServiceDesk Plus (SDP) / SupportCenter Plus
    On CISA’s list since
    Dec 1, 2021 (federal fix deadline Dec 15, 2021)
    What to do
    Attackers are using this now. Install Zoho’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
  • Nov 3, 2021Atlassian Confluence Server and Data Center Path Traversal VulnerabilityCVE-2019-3398 · Websites & servers · Atlassian · reported by security@atlassian.comExploitedHigh 8.8

    Atlassian Confluence Server and Data Center contain a path traversal vulnerability in the downloadallattachments resource that may allow a privileged, remote attacker to write files. Exploitation can lead to remote code execution.

    Product
    Confluence Server and Data Center
    On CISA’s list since
    Nov 3, 2021 (federal fix deadline May 3, 2022)
    What to do
    Attackers are using this now. Install Atlassian’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
  • Nov 3, 2021Atlassian Confluence Server and Data Center Object-Graph Navigation Language (OGNL) Injection VulnerabilityCVE-2021-26084 · Websites & servers · Atlassian · reported by security@atlassian.comExploitedRansomwareCritical 9.8

    Atlassian Confluence Server and Data Server contain an Object-Graph Navigation Language (OGNL) injection vulnerability that may allow an unauthenticated attacker to execute code.

    Product
    Confluence Server and Data Center
    On CISA’s list since
    Nov 3, 2021 (federal fix deadline Nov 17, 2021)
    What to do
    Attackers are using this now. Install Atlassian’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.
  • Nov 3, 2021Atlassian Crowd and Crowd Data Center Remote Code Execution VulnerabilityCVE-2019-11580 · Websites & servers · Atlassian · reported by security@atlassian.comExploitedRansomwareCritical 9.8

    Atlassian Crowd and Crowd Data Center contain a remote code execution vulnerability resulting from a pdkinstall development plugin being incorrectly enabled in release builds.

    Product
    Crowd and Crowd Data Center
    On CISA’s list since
    Nov 3, 2021 (federal fix deadline May 3, 2022)
    What to do
    Attackers are using this now. Install Atlassian’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.
  • Nov 3, 2021Atlassian Confluence Server and Data Center Server-Side Template Injection VulnerabilityCVE-2019-3396 · Websites & servers · Atlassian · reported by security@atlassian.comExploitedRansomwareCritical 9.8

    Atlassian Confluence Server and Data Center contain a server-side template injection vulnerability that may allow an attacker to achieve path traversal and remote code execution.

    Product
    Confluence Server and Data Server
    On CISA’s list since
    Nov 3, 2021 (federal fix deadline May 3, 2022)
    What to do
    Attackers are using this now. Install Atlassian’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.
  • Nov 3, 2021Microsoft Windows Media Center Remote Code Execution VulnerabilityCVE-2016-0185 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comExploitedHigh 7.8

    Microsoft Windows Media Center contains a remote code execution vulnerability when Windows Media Center opens a specially crafted Media Center link (.mcl) file that references malicious code.

    Product
    Windows
    On CISA’s list since
    Nov 3, 2021 (federal fix deadline May 3, 2022)
    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.
  • Nov 3, 2021VMware vCenter Server File Upload VulnerabilityCVE-2021-22005 · Other software · VMware · reported by security@vmware.comExploitedRansomwareCritical 9.8

    VMware vCenter Server contains a file upload vulnerability in the Analytics service that allows a user with network access to port 443 to execute code.

    Product
    vCenter Server
    On CISA’s list since
    Nov 3, 2021 (federal fix deadline Nov 17, 2021)
    What to do
    Attackers are using this now. Install VMware’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.
  • Nov 3, 2021VMware vCenter Server Information Disclosure VulnerabilityCVE-2020-3952 · Other software · VMware · reported by security@vmware.comExploitedCritical 9.8

    VMware vCenter Server contains an information disclosure vulnerability in the VMware Directory Service (vmdir) when the Platform Services Controller (PSC) does not correctly implement access controls. Successful exploitation allows an attacker with network access to port 389 to extract sensitive information.

    Product
    vCenter Server
    On CISA’s list since
    Nov 3, 2021 (federal fix deadline May 3, 2022)
    What to do
    Attackers are using this now. Install VMware’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
  • Nov 3, 2021VMware vCenter Server Remote Code Execution VulnerabilityCVE-2021-21972 · Other software · VMware · reported by security@vmware.comExploitedRansomwareCritical 9.8

    VMware vCenter Server vSphere Client contains a remote code execution vulnerability in a vCenter Server plugin which allows an attacker with network access to port 443 to execute commands with unrestricted privileges on the underlying operating system.

    Product
    vCenter Server
    On CISA’s list since
    Nov 3, 2021 (federal fix deadline Nov 17, 2021)
    What to do
    Attackers are using this now. Install VMware’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.
  • Nov 3, 2021VMware vCenter Server Improper Input Validation VulnerabilityCVE-2021-21985 · Other software · VMware · reported by security@vmware.comExploitedRansomwareCritical 9.8

    VMware vSphere Client contains an improper input validation vulnerability in the Virtual SAN Health Check plug-in, which is enabled by default in vCenter Server, which allows for remote code execution.

    Product
    vCenter Server
    On CISA’s list since
    Nov 3, 2021 (federal fix deadline Nov 17, 2021)
    What to do
    Attackers are using this now. Install VMware’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.

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.

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