Weakness (CWE)

CWE-703: Improper Check or Handling of Exceptional Conditions

Pillar Incomplete Mapping discouraged

The product does not properly anticipate or handle exceptional conditions that rarely occur during normal operation of the product.

Source: MITRE CWE-703

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Critical 9.9

CVE-2026-20329 Public exploit

Cisco Secure Adaptive Security Appliance Software, Secure Firewall Threat Defense Software and Secure Firewall Management Center Software Hardening Release - Exceptional Conditions Handling Vulnerabilities

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 con…

Cisco Cisco Secure Firewall Threat Defense (FTD) Software Cisco Secure Firewall Adaptive Security Appliance (ASA) Software Cisco Secure Firewall Management Center (FMC) Network devices

Sep 16, 2026