CVE-2025-20133: Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threa

Description

A vulnerability in the management and VPN web servers of the Remote Access SSL VPN feature of Cisco Secure Firewall ASA Software and Secure FTD Software could allow an unauthenticated, remote attacker to cause the device to unexpectedly stop responding, resulting in a DoS condition. This vulnerability is due to ineffective validation of user-supplied input during the Remote Access SSL VPN authentication process. An attacker could exploit this vulnerability by sending a crafted request to the VPN service on an affected device. A successful exploit could allow the attacker to cause a DoS condition where the device stops responding to Remote Access SSL VPN authentication requests.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Cisco Cisco Adaptive Security Appliance (ASA) Software

Default version status: unknown

9.12.3affected
9.8.3affected
9.12.1affected
9.12.2affected
9.8.2.45affected
9.8.4affected
9.14.1affected
9.12.4affected
9.8.2.35affected
9.8.2.28affected
9.8.2.33affected
9.8.2.38affected
9.8.4.25affected
9.12.3.2affected
9.12.3.7affected
9.8.3.18affected
9.8.3.14affected
9.8.4.15affected
9.8.4.8affected
9.8.3.29affected
9.14.1.10affected
9.12.2.5affected
9.8.4.22affected
9.12.3.12affected
9.8.4.7affected
9.8.4.17affected
9.8.3.16affected
9.8.4.20affected
9.8.3.11affected
9.12.1.3affected
9.8.4.3affected
9.12.2.4affected
9.8.4.12affected
9.12.1.2affected
9.8.3.26affected
9.12.2.9affected
9.12.3.9affected
9.8.3.21affected
9.8.4.10affected
9.12.2.1affected
9.12.4.2affected
9.14.1.6affected
9.8.3.8affected
9.14.1.15affected
9.14.1.19affected
9.8.4.26affected
9.12.4.4affected
9.14.1.30affected
9.8.4.29affected
9.12.4.7affected
9.14.2affected
9.12.4.8affected
9.8.4.32affected
9.12.4.10affected
9.14.2.4affected
9.14.2.8affected
9.12.4.13affected
9.8.4.33affected
9.14.2.13affected
9.8.4.34affected
9.12.4.18affected
9.8.4.35affected
9.14.2.15affected
9.12.4.24affected
9.16.1affected
9.8.4.39affected
9.14.3affected
9.12.4.26affected
9.16.1.28affected
9.14.3.1affected
9.12.4.29affected
9.14.3.9affected
9.16.2affected
9.12.4.30affected
9.16.2.3affected
9.8.4.40affected
9.14.3.11affected
9.12.4.35affected
9.8.4.41affected
9.15.1.1affected
9.14.3.13affected
9.16.2.7affected
9.12.4.37affected
9.14.3.15affected
9.17.1affected
9.16.2.11affected
9.14.3.18affected
9.16.2.13affected
9.12.4.39affected
9.12.4.38affected
9.8.4.43affected
9.14.4affected
9.16.2.14affected
9.17.1.7affected
9.12.4.40affected
9.16.3.3affected
9.14.4.6affected
9.16.3affected
9.16.3.14affected
9.17.1.9affected
9.14.4.7affected
9.12.4.41affected
9.17.1.10affected
9.8.4.44affected
9.18.1affected
9.12.4.47affected
9.14.4.12affected
9.16.3.15affected
9.18.1.3affected
9.17.1.11affected
9.12.4.48affected
9.14.4.13affected
9.18.2affected
9.16.3.19affected
9.17.1.13affected
9.12.4.50affected
9.14.4.14affected
9.17.1.15affected
9.8.4.45affected
9.12.4.52affected
9.14.4.15affected
9.16.3.23affected
9.18.2.5affected
9.16.4affected
9.12.4.54affected
9.14.4.17affected
9.8.4.46affected
9.17.1.20affected
9.18.2.7affected
9.19.1affected
9.16.4.9affected
9.12.4.55affected
9.18.2.8affected
9.14.4.22affected
9.16.4.14affected
9.8.4.48affected
9.18.3affected
9.19.1.5affected
9.14.4.23affected
9.12.4.56affected
9.16.4.18affected
9.17.1.30affected
9.19.1.9affected
9.18.3.39affected
9.16.4.19affected
9.12.4.58affected
9.19.1.12affected
9.18.3.46affected
9.16.4.27affected
9.19.1.18affected
9.18.3.53affected
9.18.3.55affected
9.16.4.38affected
9.17.1.33affected
9.12.4.62affected
9.16.4.39affected
9.18.3.56affected
9.20.1affected
9.16.4.42affected
9.19.1.22affected
9.18.4affected
9.20.1.5affected
9.18.4.5affected
9.19.1.24affected
9.16.4.48affected
9.18.4.8affected
9.20.2affected
9.19.1.27affected
9.12.4.65affected
9.16.4.55affected
9.18.4.22affected
9.20.2.10affected
9.16.4.57affected
9.19.1.28affected
9.17.1.39affected
9.12.4.67affected
9.14.4.24affected
9.18.4.24affected
9.20.2.21affected
9.16.4.61affected
9.19.1.31affected
9.18.4.29affected
9.20.2.22affected
9.16.4.62affected
9.20.3affected
9.17.1.45affected
9.19.1.37affected
9.17.1.46affected
9.19.1.38affected

Cisco Cisco Firepower Threat Defense Software

Default version status: unknown

6.2.3.14affected
6.4.0.1affected
6.2.3.7affected
6.4.0.2affected
6.2.3.9affected
6.2.3.1affected
6.2.3.2affected
6.4.0.5affected
6.2.3.10affected
6.4.0affected
6.4.0.3affected
6.2.3.6affected
6.4.0.4affected
6.2.3.15affected
6.2.3.5affected
6.2.3.4affected
6.2.3.3affected
6.2.3.8affected
6.4.0.6affected
6.2.3.11affected
6.2.3.12affected
6.2.3.13affected
6.4.0.7affected
6.4.0.8affected
6.6.0affected
6.4.0.9affected
6.2.3.16affected
6.6.0.1affected
6.6.1affected
6.4.0.10affected
6.4.0.11affected
6.6.3affected
6.6.4affected
6.4.0.12affected
7.0.0affected
6.2.3.17affected
7.0.0.1affected
6.6.5affected
7.0.1affected
7.1.0affected
6.4.0.13affected
6.6.5.1affected
6.2.3.18affected
7.0.1.1affected
6.4.0.14affected
7.1.0.1affected
6.6.5.2affected
7.0.2affected
6.4.0.15affected
7.2.0affected
7.0.2.1affected
7.0.3affected
6.6.7affected
7.1.0.2affected
7.2.0.1affected
7.0.4affected
7.2.1affected
7.0.5affected
6.4.0.16affected
7.3.0affected
7.2.2affected
7.2.3affected
6.6.7.1affected
7.3.1affected
7.1.0.3affected
7.2.4affected
7.0.6affected
7.2.5affected
7.2.4.1affected
7.3.1.1affected
7.4.0affected
6.4.0.17affected
7.0.6.1affected
7.2.5.1affected
7.4.1affected
7.2.6affected
7.0.6.2affected
7.4.1.1affected
6.6.7.2affected
6.4.0.18affected
7.2.7affected
7.2.5.2affected
7.3.1.2affected
7.2.8affected
7.4.2affected
7.2.8.1affected
7.4.2.1affected

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-vpn-dos-mfPekA6e ↗