Updated 4 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.

1,764exploited flaws on CISA’s list

35added in the last 30 days

457new WordPress flaws this week

390,714entries in the database

9 results

Jul 15, 2026KNX Association KNX Protocol Connection Authorization Option 1 Overly Restrictive Account Lockout Mechanism VulnerabilityCVE-2023-4346 · Other software · KNX Association · reported by ics-cert@hq.dhs.govExploitedHigh 7.5
KNX Association KNX Protocol Connection Authorization Option 1 contains an overly restrictive account lockout mechanism vulnerability that could allow an attacker to purge all devices without additional security options enabled and set a BCU key to lock the device.
Product
KNX Protocol Connection Authorization Option 1
On CISA’s list since
Jul 15, 2026 (federal fix deadline Jul 29, 2026)
What to do
Attackers are using this now. Install KNX Association’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 cisa.gov cisa.gov
Nov 8, 2023Service Location Protocol (SLP) Denial-of-Service VulnerabilityCVE-2023-29552 · Other software · IETF · reported by MITREExploitedHigh 7.5
The Service Location Protocol (SLP) contains a denial-of-service (DoS) vulnerability that could allow an unauthenticated, remote attacker to register services and use spoofed UDP traffic to conduct a denial-of-service (DoS) attack with a significant amplification factor.
Product
Service Location Protocol (SLP)
On CISA’s list since
Nov 8, 2023 (federal fix deadline Nov 29, 2023)
What to do
Attackers are using this now. Install IETF’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.vmware.com curesec.com
Apr 6, 2022Microsoft HTTP Protocol Stack Remote Code Execution VulnerabilityCVE-2021-31166 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comExploitedCritical 9.8
Microsoft HTTP Protocol Stack contains a vulnerability in http.sys that allows for remote code execution.
Product
HTTP Protocol Stack
On CISA’s list since
Apr 6, 2022 (federal fix deadline Apr 27, 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.
Full record and what to do →NVD record CISA catalog packetstormsecurity.com portal.msrc.microsoft.com
Mar 25, 2022Cisco IOS XR Border Gateway Protocol (BGP) Denial-of-Service VulnerabilityCVE-2010-3035 · Network & remote access · Cisco · reported by psirt@cisco.comExploitedHigh 7.5
Cisco IOS XR, when BGP is the configured routing feature, allows remote attackers to cause a denial-of-service (DoS).
Product
IOS XR
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.
Full record and what to do →NVD record CISA catalog mailman.nanog.org osvdb.org
Mar 25, 2022Cisco IOS XR Border Gateway Protocol (BGP) Denial-of-Service VulnerabilityCVE-2009-2055 · Network & remote access · Cisco · reported by psirt@cisco.comExploitedMedium 5.9
Cisco IOS XR,when BGP is the configured routing feature, allows remote attackers to cause a denial-of-service (DoS).
Product
IOS XR
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.
Full record and what to do →NVD record CISA catalog mailman.nanog.org securitytracker.com
Mar 3, 2022Cisco IOS XE Software Ethernet Virtual Private Network Border Gateway Protocol Denial-of-Service VulnerabilityCVE-2017-12319 · Network & remote access · Cisco · reported by psirt@cisco.comExploitedMedium 5.9
A vulnerability in the Border Gateway Protocol (BGP) over an Ethernet Virtual Private Network (EVPN) for Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause the device to reload, resulting in a denial of service (DoS) condition, or potentially corrupt the BGP routing table, which could result in network instability.
Product
IOS XE Software
On CISA’s list since
Mar 3, 2022 (federal fix deadline Mar 24, 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.
Full record and what to do →NVD record CISA catalog securityfocus.com tools.cisco.com
Mar 3, 2022Cisco IOS Software Common Industrial Protocol Request Denial-of-Service VulnerabilityCVE-2017-12234 · Network & remote access · Cisco · reported by psirt@cisco.comExploitedHigh 7.5
There is a vulnerability in the implementation of the Common Industrial Protocol (CIP) feature in Cisco IOS could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service.
Product
IOS software
On CISA’s list since
Mar 3, 2022 (federal fix deadline Mar 24, 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.
Full record and what to do →NVD record CISA catalog securityfocus.com securitytracker.com
Mar 3, 2022Cisco IOS Software Common Industrial Protocol Request Denial-of-Service VulnerabilityCVE-2017-12233 · Network & remote access · Cisco · reported by psirt@cisco.comExploitedHigh 7.5
There is a vulnerability in the implementation of the Common Industrial Protocol (CIP) feature in Cisco IOS could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service.
Product
IOS software
On CISA’s list since
Mar 3, 2022 (federal fix deadline Mar 24, 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.
Full record and what to do →NVD record CISA catalog securityfocus.com securitytracker.com
Nov 3, 2021Cisco IOS XR Software Discovery Protocol Format String VulnerabilityCVE-2020-3118 · Network & remote access · Cisco · reported by psirt@cisco.comExploitedHigh 8.8
Cisco IOS XR improperly validates string input from certain fields in Cisco Discovery Protocol messages. Exploitation could allow an unauthenticated, adjacent attacker to execute code with administrative privileges or cause a reload on an affected device.
Product
IOS XR
On CISA’s list since
Nov 3, 2021 (federal fix deadline May 3, 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.
Full record and what to do →NVD record CISA catalog packetstormsecurity.com tools.cisco.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.

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Vulnerability database

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