CVE-2025-20244: Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threa

Description

A vulnerability in the Remote Access SSL VPN service for Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow a remote attacker that is authenticated as a VPN user to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition. This vulnerability is due to incomplete error checking when parsing an HTTP header field value. An attacker could exploit this vulnerability by sending a crafted HTTP request to a targeted Remote Access SSL VPN service on an affected device. A successful exploit could allow the attacker to cause a DoS condition, which would cause the affected device to reload.

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
9.8.1affected
9.12.2affected
9.8.2.45affected
9.8.2affected
9.8.4affected
9.14.1affected
9.12.4affected
9.8.2.26affected
9.8.2.24affected
9.8.2.15affected
9.8.2.14affected
9.8.2.35affected
9.8.2.20affected
9.8.2.8affected
9.8.2.17affected
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
9.8.1.7affected
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
9.8.1.5affected
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
9.14.3.13affected
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
9.18.4.34affected
9.20.3affected
9.16.4.67affected
9.16.4.70affected
9.18.4.40affected
9.22.1.1affected
9.16.4.71affected
9.20.3.4affected
9.16.4.76affected
9.22.1.2affected
9.16.4.82affected

Cisco Cisco Firepower Threat Defense Software

Default version status: unknown

6.2.3.14affected
6.4.0.1affected
6.2.3.7affected
6.2.3affected
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
7.6.0affected
7.4.2affected
7.2.8.1affected
7.0.6.3affected
7.4.2.1affected
7.0.7affected
7.4.2.2affected
7.4.2.3affected

References

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