Cisco Secure Adaptive Security Appliance Software improper adherence to coding standards

Summaryinfo

A vulnerability classified as very critical has been found in Cisco Secure Adaptive Security Appliance Software, Secure Firewall Management Center Software and Secure Firewall Threat Defense Software. This issue affects some unknown processing. The manipulation leads to improper adherence to coding standards. This vulnerability is listed as CVE-2026-20334. The attack may be initiated remotely. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Cisco Secure Adaptive Security Appliance Software, Secure Firewall Management Center Software and Secure Firewall Threat Defense Software (version now known). It has been rated as very critical. This issue affects some unknown processing. The manipulation with an unknown input leads to a improper adherence to coding standards vulnerability. Using CWE to declare the problem leads to CWE-710. The product does not follow certain coding rules for development, which can lead to resultant weaknesses or increase the severity of the associated vulnerabilities. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at sec.cloudapps.cisco.com. The identification of this vulnerability is CVE-2026-20334 since 10/08/2025. The exploitation is known to be easy. The attack may be initiated remotely. Additional levels of successful authentication are necessary for exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 09/16/2026).

Upgrading eliminates this vulnerability.

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Productinfo

Type

• Firewall Software

Vendor

• Cisco

Name

• Secure Adaptive Security Appliance Software
• Secure Firewall Management Center Software
• Secure Firewall Threat Defense Software

License

• commercial

Website

• Vendor: https://www.cisco.com/

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