CVE-2026-20334

HighCVSS 8.4

Published: 16/09/2026(UTC)Updated: 18/09/2026(UTC)Translated: 17/09/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.26%

19th percentile - higher than 19% of all known CVEs

Summary

Vulnerability in Cisco Secure ASA, FTD, and FMC software due to improper adherence to coding standards (CWE-710). It was discovered during an internal security review and addressed in a hardening release.

Risk Assessment

The risk associated with this vulnerability is not detailed, but may include various security issues resulting from improper coding practices.

Recommendation

Apply the hardening release provided by Cisco that addresses this vulnerability.

Other vulnerabilities in Cisco Secure ASA/FTD/FMC Software

CVE-2026-20333High
Vulnerability in Cisco Secure ASA, FTD, and FMC software due to incorrect comparison conditions (CWE-697). It was discovered during an internal security review and addressed in a hardening release.

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS