CVE-2026-20335

Summary

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-2026-20335 are related to incorrect calculation issues that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-682.

Affected Software

VendorProductVersion RangeStatus
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.16.1affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.16.1.28affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.16.2affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.16.2.3affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.16.2.7affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.16.2.11affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.16.2.13affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.16.2.14affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.16.3.3affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.16.3affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.16.3.14affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.16.3.15affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.18.1.3affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.18.2affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.16.3.19affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.16.3.23affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.18.2.5affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.16.4affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.18.2.7affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.16.4.9affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.18.2.8affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.16.4.14affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.18.3affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.16.4.18affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.18.3.39affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.16.4.19affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.18.3.46affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.16.4.27affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.18.3.53affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.18.3.55affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.16.4.38affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.16.4.39affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.18.3.56affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.20.1affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.16.4.42affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.18.4affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.20.1.5affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.18.4.5affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.16.4.48affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.18.4.8affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.20.2affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.16.4.55affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.18.4.22affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.20.2.10affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.16.4.57affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.18.4.24affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.20.2.21affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.16.4.61affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.18.4.29affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.20.2.22affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.16.4.62affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.18.4.34affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.20.3affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.16.4.67affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.16.4.70affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.18.4.40affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.23.1affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.22.1.1affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.16.4.71affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.20.3.4affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.18.4.47affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.20.3.7affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.16.4.76affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.20.3.9affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.18.4.50affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.22.1.3affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.20.3.10affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.22.1.2affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.18.4.52affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.20.3.13affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.22.1.6affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.18.4.53affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.16.4.82affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.22.2affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.20.3.16affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.19.1.42affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.18.4.57affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.16.4.84affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.23.1.3affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.20.3.20affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.22.2.4affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.23.1.7affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.20.4affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.22.2.9affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.23.1.13affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.20.4.7affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.22.2.13affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.18.4.66affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.20.4.10affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.23.1.19affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.16.4.85affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.22.2.14affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.18.4.67affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.24.1affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.18.4.68affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.23.1.22affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.20.4.14affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.22.2.20affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.18.4.71affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.20.4.19affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.23.1.26affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.16.4.89affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.22.2.32affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.18.4.76affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.22.3affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.24.1.5affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.20.4.22affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.24.1.9affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.20.4.28affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.22.3.5affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.16.4.92affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.18.4.135affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.23.1.195affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.20.4.30affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.24.1.155affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.23.1.32affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.24.1.11affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.20.4.34affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.18.4.82affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.24.10affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.23.1.211affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.20.4.235affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.24.1.221affected
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.22.3.191affected
CiscoCisco Secure Firewall Management Center (FMC)7.0.0affected
CiscoCisco Secure Firewall Management Center (FMC)7.0.0.1affected
CiscoCisco Secure Firewall Management Center (FMC)7.0.1affected
CiscoCisco Secure Firewall Management Center (FMC)7.0.1.1affected
CiscoCisco Secure Firewall Management Center (FMC)7.0.2affected
CiscoCisco Secure Firewall Management Center (FMC)7.2.0affected
CiscoCisco Secure Firewall Management Center (FMC)7.0.2.1affected
CiscoCisco Secure Firewall Management Center (FMC)7.0.3affected
CiscoCisco Secure Firewall Management Center (FMC)7.2.0.1affected
CiscoCisco Secure Firewall Management Center (FMC)7.0.4affected
CiscoCisco Secure Firewall Management Center (FMC)7.2.1affected
CiscoCisco Secure Firewall Management Center (FMC)7.0.5affected
CiscoCisco Secure Firewall Management Center (FMC)7.3.0affected
CiscoCisco Secure Firewall Management Center (FMC)7.2.2affected
CiscoCisco Secure Firewall Management Center (FMC)7.3.1affected
CiscoCisco Secure Firewall Management Center (FMC)7.2.3affected
CiscoCisco Secure Firewall Management Center (FMC)7.2.3.1affected
CiscoCisco Secure Firewall Management Center (FMC)7.2.4affected
CiscoCisco Secure Firewall Management Center (FMC)7.0.6affected
CiscoCisco Secure Firewall Management Center (FMC)7.2.4.1affected
CiscoCisco Secure Firewall Management Center (FMC)7.2.5affected
CiscoCisco Secure Firewall Management Center (FMC)7.3.1.1affected
CiscoCisco Secure Firewall Management Center (FMC)7.4.0affected
CiscoCisco Secure Firewall Management Center (FMC)7.0.6.1affected
CiscoCisco Secure Firewall Management Center (FMC)7.2.5.1affected
CiscoCisco Secure Firewall Management Center (FMC)7.4.1affected
CiscoCisco Secure Firewall Management Center (FMC)7.2.6affected
CiscoCisco Secure Firewall Management Center (FMC)7.4.1.1affected
CiscoCisco Secure Firewall Management Center (FMC)7.0.6.2affected
CiscoCisco Secure Firewall Management Center (FMC)7.2.7affected
CiscoCisco Secure Firewall Management Center (FMC)7.2.5.2affected
CiscoCisco Secure Firewall Management Center (FMC)7.3.1.2affected
CiscoCisco Secure Firewall Management Center (FMC)7.2.8affected
CiscoCisco Secure Firewall Management Center (FMC)7.6.0affected
CiscoCisco Secure Firewall Management Center (FMC)7.4.2affected
CiscoCisco Secure Firewall Management Center (FMC)7.2.8.1affected
CiscoCisco Secure Firewall Management Center (FMC)7.0.6.3affected
CiscoCisco Secure Firewall Management Center (FMC)7.4.2.1affected
CiscoCisco Secure Firewall Management Center (FMC)7.2.9affected
CiscoCisco Secure Firewall Management Center (FMC)7.0.7affected
CiscoCisco Secure Firewall Management Center (FMC)7.7.0affected
CiscoCisco Secure Firewall Management Center (FMC)7.4.2.2affected
CiscoCisco Secure Firewall Management Center (FMC)7.2.10affected
CiscoCisco Secure Firewall Management Center (FMC)7.6.1affected
CiscoCisco Secure Firewall Management Center (FMC)7.4.2.3affected
CiscoCisco Secure Firewall Management Center (FMC)7.0.8affected
CiscoCisco Secure Firewall Management Center (FMC)7.6.2affected
CiscoCisco Secure Firewall Management Center (FMC)7.7.10affected
CiscoCisco Secure Firewall Management Center (FMC)7.2.10.1affected
CiscoCisco Secure Firewall Management Center (FMC)7.0.8.1affected
CiscoCisco Secure Firewall Management Center (FMC)7.6.2.1affected
CiscoCisco Secure Firewall Management Center (FMC)7.2.10.2affected
CiscoCisco Secure Firewall Management Center (FMC)7.7.10.1affected
CiscoCisco Secure Firewall Management Center (FMC)7.4.2.4affected
CiscoCisco Secure Firewall Management Center (FMC)7.4.3affected
CiscoCisco Secure Firewall Management Center (FMC)7.6.3affected
CiscoCisco Secure Firewall Management Center (FMC)7.7.11affected
CiscoCisco Secure Firewall Management Center (FMC)7.6.4affected
CiscoCisco Secure Firewall Management Center (FMC)10.0.0affected
CiscoCisco Secure Firewall Management Center (FMC)7.4.4affected
CiscoCisco Secure Firewall Management Center (FMC)7.4.5affected
CiscoCisco Secure Firewall Management Center (FMC)7.0.9affected
CiscoCisco Secure Firewall Management Center (FMC)7.2.11affected
CiscoCisco Secure Firewall Management Center (FMC)7.7.12affected
CiscoCisco Secure Firewall Management Center (FMC)7.6.5affected
CiscoCisco Secure Firewall Management Center (FMC)7.4.6affected
CiscoCisco Secure Firewall Management Center (FMC)10.0.1affected
CiscoCisco Secure Firewall Management Center (FMC)7.4.7affected
CiscoCisco Secure Firewall Threat Defense (FTD) Software7.0.0.1affected
CiscoCisco Secure Firewall Threat Defense (FTD) Software7.0.1affected
CiscoCisco Secure Firewall Threat Defense (FTD) Software7.0.1.1affected
CiscoCisco Secure Firewall Threat Defense (FTD) Software7.0.2affected
CiscoCisco Secure Firewall Threat Defense (FTD) Software7.0.2.1affected
CiscoCisco Secure Firewall Threat Defense (FTD) Software7.0.3affected
CiscoCisco Secure Firewall Threat Defense (FTD) Software7.0.4affected
CiscoCisco Secure Firewall Threat Defense (FTD) Software7.0.5affected
CiscoCisco Secure Firewall Threat Defense (FTD) Software7.3.0affected
CiscoCisco Secure Firewall Threat Defense (FTD) Software7.3.1affected
CiscoCisco Secure Firewall Threat Defense (FTD) Software7.0.6affected
CiscoCisco Secure Firewall Threat Defense (FTD) Software7.3.1.1affected
CiscoCisco Secure Firewall Threat Defense (FTD) Software7.4.0affected
CiscoCisco Secure Firewall Threat Defense (FTD) Software7.0.6.1affected
CiscoCisco Secure Firewall Threat Defense (FTD) Software7.4.1affected
CiscoCisco Secure Firewall Threat Defense (FTD) Software7.0.6.2affected
CiscoCisco Secure Firewall Threat Defense (FTD) Software7.4.1.1affected
CiscoCisco Secure Firewall Threat Defense (FTD) Software7.3.1.2affected
CiscoCisco Secure Firewall Threat Defense (FTD) Software7.6.0affected
CiscoCisco Secure Firewall Threat Defense (FTD) Software7.4.2affected
CiscoCisco Secure Firewall Threat Defense (FTD) Software7.0.6.3affected
CiscoCisco Secure Firewall Threat Defense (FTD) Software7.4.2.1affected
CiscoCisco Secure Firewall Threat Defense (FTD) Software7.0.7affected
CiscoCisco Secure Firewall Threat Defense (FTD) Software7.7.0affected
CiscoCisco Secure Firewall Threat Defense (FTD) Software7.4.2.2affected
CiscoCisco Secure Firewall Threat Defense (FTD) Software7.6.1affected
CiscoCisco Secure Firewall Threat Defense (FTD) Software7.4.2.3affected
CiscoCisco Secure Firewall Threat Defense (FTD) Software7.0.8affected
CiscoCisco Secure Firewall Threat Defense (FTD) Software7.6.2affected
CiscoCisco Secure Firewall Threat Defense (FTD) Software7.7.10affected
CiscoCisco Secure Firewall Threat Defense (FTD) Software7.7.11affected
CiscoCisco Secure Firewall Threat Defense (FTD) Software7.0.8.1affected
CiscoCisco Secure Firewall Threat Defense (FTD) Software7.6.2.1affected
CiscoCisco Secure Firewall Threat Defense (FTD) Software7.7.10.1affected
CiscoCisco Secure Firewall Threat Defense (FTD) Software7.4.2.4affected
CiscoCisco Secure Firewall Threat Defense (FTD) Software7.4.3affected
CiscoCisco Secure Firewall Threat Defense (FTD) Software7.6.4affected
CiscoCisco Secure Firewall Threat Defense (FTD) Software10.0.0affected
CiscoCisco Secure Firewall Threat Defense (FTD) Software7.4.4affected
CiscoCisco Secure Firewall Threat Defense (FTD) Software7.0.9affected
CiscoCisco Secure Firewall Threat Defense (FTD) Software7.4.7affected

Weaknesses

  • CWE-682: Incorrect Calculation

References