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-2026-20336 are related to issues concerning improper control of a resource through its lifetime that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-664.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Cisco Cisco Secure Firewall Adaptive Security Appliance (ASA) Software
Default version status: unknown
9.16.1affected9.16.1.28affected9.16.2affected9.16.2.3affected9.16.2.7affected9.16.2.11affected9.16.2.13affected9.16.2.14affected9.16.3.3affected9.16.3affected9.16.3.14affected9.16.3.15affected9.18.1.3affected9.18.2affected9.16.3.19affected9.16.3.23affected9.18.2.5affected9.16.4affected9.18.2.7affected9.16.4.9affected9.18.2.8affected9.16.4.14affected9.18.3affected9.16.4.18affected9.18.3.39affected9.16.4.19affected9.18.3.46affected9.16.4.27affected9.18.3.53affected9.18.3.55affected9.16.4.38affected9.16.4.39affected9.18.3.56affected9.20.1affected9.16.4.42affected9.18.4affected9.20.1.5affected9.18.4.5affected9.16.4.48affected9.18.4.8affected9.20.2affected9.16.4.55affected9.18.4.22affected9.20.2.10affected9.16.4.57affected9.18.4.24affected9.20.2.21affected9.16.4.61affected9.18.4.29affected9.20.2.22affected9.16.4.62affected9.18.4.34affected9.20.3affected9.16.4.67affected9.16.4.70affected9.18.4.40affected9.23.1affected9.22.1.1affected9.16.4.71affected9.20.3.4affected9.18.4.47affected9.20.3.7affected9.16.4.76affected9.20.3.9affected9.18.4.50affected9.22.1.3affected9.20.3.10affected9.22.1.2affected9.18.4.52affected9.20.3.13affected9.22.1.6affected9.18.4.53affected9.16.4.82affected9.22.2affected9.20.3.16affected9.19.1.42affected9.18.4.57affected9.16.4.84affected9.23.1.3affected9.20.3.20affected9.22.2.4affected9.23.1.7affected9.20.4affected9.22.2.9affected9.23.1.13affected9.20.4.7affected9.22.2.13affected9.18.4.66affected9.20.4.10affected9.23.1.19affected9.16.4.85affected9.22.2.14affected9.18.4.67affected9.24.1affected9.18.4.68affected9.23.1.22affected9.20.4.14affected9.22.2.20affected9.18.4.71affected9.20.4.19affected9.23.1.26affected9.16.4.89affected9.22.2.32affected9.18.4.76affected9.22.3affected9.24.1.5affected9.20.4.22affected9.24.1.9affected9.20.4.28affected9.22.3.5affected9.16.4.92affected9.18.4.135affected9.23.1.195affected9.20.4.30affected9.24.1.155affected9.23.1.32affected9.24.1.11affected9.20.4.34affected9.18.4.82affected9.24.10affected9.20.4.235affected
Cisco Cisco Secure Firewall Management Center (FMC)
Default version status: unknown
7.0.0affected7.0.0.1affected7.0.1affected7.0.1.1affected7.0.2affected7.2.0affected7.0.2.1affected7.0.3affected7.2.0.1affected7.0.4affected7.2.1affected7.0.5affected7.3.0affected7.2.2affected7.3.1affected7.2.3affected7.2.3.1affected7.2.4affected7.0.6affected7.2.4.1affected7.2.5affected7.3.1.1affected7.4.0affected7.0.6.1affected7.2.5.1affected7.4.1affected7.2.6affected7.4.1.1affected7.0.6.2affected7.2.7affected7.2.5.2affected7.3.1.2affected7.2.8affected7.6.0affected7.4.2affected7.2.8.1affected7.0.6.3affected7.4.2.1affected7.2.9affected7.0.7affected7.7.0affected7.4.2.2affected7.2.10affected7.6.1affected7.4.2.3affected7.0.8affected7.6.2affected7.7.10affected7.2.10.1affected7.0.8.1affected7.6.2.1affected7.2.10.2affected7.7.10.1affected7.4.2.4affected7.4.3affected7.6.3affected7.7.11affected7.6.4affected10.0.0affected7.4.4affected7.4.5affected7.0.9affected7.2.11affected7.7.12affected7.6.5affected7.4.6affected10.0.1affected7.4.7affected
Cisco Cisco Secure Firewall Threat Defense (FTD) Software
Default version status: unknown
7.0.0.1affected7.0.1affected7.0.1.1affected7.0.2affected7.0.2.1affected7.0.3affected7.0.4affected7.0.5affected7.3.0affected7.3.1affected7.0.6affected7.3.1.1affected7.4.0affected7.0.6.1affected7.4.1affected7.0.6.2affected7.4.1.1affected7.3.1.2affected7.6.0affected7.4.2affected7.0.6.3affected7.4.2.1affected7.0.7affected7.7.0affected7.4.2.2affected7.6.1affected7.4.2.3affected7.0.8affected7.6.2affected7.7.10affected7.7.11affected7.0.8.1affected7.6.2.1affected7.7.10.1affected7.4.2.4affected7.4.3affected7.6.4affected10.0.0affected7.4.4affected7.0.9affected7.4.7affected