The CISA KEV Catalogue, Searchable
Every flaw attackers are known to be using: what it is, how bad, and what fixes it.
- Flaws on the list
- 1,779
- Added in 30 days
- 40
- Used in ransomware
- 361
- In web & server software
- 181
29 Jul 2026 Cisco Secure Firewall Management Center (FMC) Security flaw
A vulnerability in the web interface of Cisco Secure Firewall Management Center (FMC) Software 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. This vulnerability is due to the presence of static user credentials for a low-privileged account. An attacker could exploit this vulnerability by using the account to log in to an affected system. A successful exploit could allow the attacker to log in to the affected system and access sensitive data as the low-privileged user. Note: If the FMC management interface does not have public internet access, the attack surface that is associated with this vulnerability is reduced. Cisco has assigned this security advisory a Security Impact Rating (SIR) of High rather than Medium as the score indicates. The reason is that this vulnerability can be used with other Cisco Secure FMC Software vulnerabilities to elevate privileges.
- What to do
- Apply the vendor's update or fix (see the vendor advisory below). If you can't, take it off the internet or stop using it until you can.
- CISA due date
- 1 Aug 2026
- Weakness
- CWE-259
19 Mar 2026 Cisco Secure Firewall Management Center (FMC) Remote code execution
A vulnerability in the web-based management interface of Cisco Secure Firewall Management Center (FMC) Software could allow an unauthenticated, remote attacker to execute arbitrary Java code as root on an affected device. This vulnerability is due to insecure deserialization of a user-supplied Java byte stream. An attacker could exploit this vulnerability by sending a crafted serialized Java object to the web-based management interface of an affected device. A successful exploit could allow the attacker to execute arbitrary code on the device and elevate privileges to root. Note: If the FMC management interface does not have public internet access, the attack surface that is associated with this vulnerability is reduced.
- What to do
- Apply the vendor's update or fix (see the vendor advisory below). If you can't, take it off the internet or stop using it until you can.
- CISA due date
- 22 Mar 2026
- Weakness
- CWE-502
15 Feb 2024 Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) Information disclosure
A vulnerability in the web services interface of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to retrieve memory contents on an affected device, which could lead to the disclosure of confidential information. The vulnerability is due to a buffer tracking issue when the software parses invalid URLs that are requested from the web services interface. An attacker could exploit this vulnerability by sending a crafted GET request to the web services interface. A successful exploit could allow the attacker to retrieve memory contents, which could lead to the disclosure of confidential information. Note: This vulnerability affects only specific AnyConnect and WebVPN configurations. For more information, see the Vulnerable Products section.
- What to do
- Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- Fixed in (NVD)
- cisco adaptive security appliance software 9.13.1.10, cisco adaptive security appliance software 9.12.3.9, cisco adaptive security appliance software 9.10.1.40, cisco adaptive security appliance software 9.9.2.67, cisco adaptive security appliance software 9.8.4.20 and 4 older
- CISA due date
- 7 Mar 2024
- Weakness
- CWE-200
13 Sep 2023 Cisco Adaptive Security Appliance and Firepower Threat Defense Authentication bypass
A vulnerability in the remote access VPN feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to conduct a brute force attack in an attempt to identify valid username and password combinations or an authenticated, remote attacker to establish a clientless SSL VPN session with an unauthorized user. This vulnerability is due to improper separation of authentication, authorization, and accounting (AAA) between the remote access VPN feature and the HTTPS management and site-to-site VPN features. An attacker could exploit this vulnerability by specifying a default connection profile/tunnel group while conducting a brute force attack or while establishing a clientless SSL VPN session using valid credentials. A successful exploit could allow the attacker to achieve one or both of the following: Identify valid credentials that could then be used to establish an unauthorized remote access VPN session. Establish a clientless SSL VPN session (only when running Cisco ASA Software Release 9.16 or earlier). Notes: Establishing a client-based remote access VPN tunnel is not possible as these default connection profiles/tunnel groups do not and cannot have an IP address pool configured. This vulnerability does not allow an attacker to bypass authentication. To successfully establish a remote access VPN session, valid credentials are required, including a valid second factor if multi-factor authentication (MFA) is configured. Cisco will release software updates that address this vulnerability. There are workarounds that address this vulnerability.
- What to do
- Apply mitigations per vendor instructions for group-lock and vpn-simultaneous-logins or discontinue use of the product for unsupported devices.
- CISA due date
- 4 Oct 2023
- Weakness
- CWE-288
24 Oct 2022 Cisco AnyConnect Secure Security flaw
A vulnerability in the interprocess communication (IPC) channel of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to perform a DLL hijacking attack. To exploit this vulnerability, the attacker would need to have valid credentials on the Windows system. The vulnerability is due to insufficient validation of resources that are loaded by the application at run time. An attacker could exploit this vulnerability by sending a crafted IPC message to the AnyConnect process. A successful exploit could allow the attacker to execute arbitrary code on the affected machine with SYSTEM privileges. To exploit this vulnerability, the attacker would need to have valid credentials on the Windows system.
- What to do
- Apply updates per vendor instructions.
- Fixed in (NVD)
- cisco anyconnect secure mobility client 4.9.00086
- CISA due date
- 14 Nov 2022
- Weakness
- CWE-427
24 Oct 2022 Cisco AnyConnect Secure Security flaw
A vulnerability in the installer component of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated local attacker to copy user-supplied files to system level directories with system level privileges. The vulnerability is due to the incorrect handling of directory paths. An attacker could exploit this vulnerability by creating a malicious file and copying the file to a system directory. An exploit could allow the attacker to copy malicious files to arbitrary locations with system level privileges. This could include DLL pre-loading, DLL hijacking, and other related attacks. To exploit this vulnerability, the attacker needs valid credentials on the Windows system.
- What to do
- Apply updates per vendor instructions.
- Fixed in (NVD)
- cisco anyconnect secure mobility client 4.8.02042
- CISA due date
- 14 Nov 2022
- Weakness
- CWE-427
3 Nov 2021 Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) Cross-site scripting
Multiple vulnerabilities in the web services interface of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to conduct cross-site scripting (XSS) attacks against a user of the web services interface of an affected device. The vulnerabilities are due to insufficient validation of user-supplied input by the web services interface of an affected device. An attacker could exploit these vulnerabilities by persuading a user of the interface to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the interface or allow the attacker to access sensitive, browser-based information. Note: These vulnerabilities affect only specific AnyConnect and WebVPN configurations. For more information, see the Vulnerable Products section.
- What to do
- Apply updates per vendor instructions.
- Fixed in (NVD)
- cisco adaptive security appliance software 9.15.1.15, cisco adaptive security appliance software 9.14.2.8, cisco adaptive security appliance software 9.13.1.21, cisco adaptive security appliance software 9.12.4.13, cisco adaptive security appliance software 9.9.2.85 and 4 older
- CISA due date
- 3 May 2022
- Weakness
- CWE-79
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About the KEV Catalogue
What is the CISA KEV catalogue?
CISA's list of flaws attackers are known to be using. A flaw is added only with reliable evidence of attacks and a known fix.
Why does it matter more than the CVSS score?
Few CVEs are ever used in attacks. These are, so fix them first, whatever their score.
What is the due date?
The deadline for US federal agencies to fix it (BOD 26-04, which replaced BOD 22-01): as little as three days for recent entries. A sensible deadline for anyone.
Does it apply outside the US?
The deadlines don't, but the flaws are in software used everywhere. If you run it, it applies to you.
What does "used in ransomware" mean?
CISA knows ransomware groups have used the flaw.
How often is it updated?
CISA adds flaws several times a week. CVE Hawk checks hourly and alerts you within half an hour if it's your software.