CVE-2026-20334 Other in Cisco Secure Firewall Adaptive Security Appliance (ASA) Software
Cisco released a hardening update addressing multiple coding standard violations in firewall software, requiring users to apply the patch for improved security posture.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-20334?
CVE-2026-20334 is a high-severity vulnerability in Cisco Secure Firewall Adaptive Security Appliance (ASA) Software, published on 16 Sep 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Adaptive Security Appliance Software, Cisco Secure Firewall Threat Defense Software and Cisco Secure Firewall Management Center Software engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-20334 are related to issues concerning improper adherence to coding standards that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-710.
Weakness: CWE-710
Which versions are affected by CVE-2026-20334?
How do I fix CVE-2026-20334?
No fix has been published for CVE-2026-20334 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-20334 being exploited?
There is no known exploitation of CVE-2026-20334 in the wild and no public exploit code.
Sources
Also known as GHSA-2vf5-qc6p-8g6v.