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CVE PROGRAM SOURCE RECORD8.6 High

CVE-2025-20134

Cisco Adaptive Security Appliance and Firepower Threat Defense Software SSL/TLS Certificate Denial of Service Vulnerability

Description

A vulnerability in the certificate processing of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition. This vulnerability is due to improper parsing of SSL/TLS certificates. An attacker could exploit this vulnerability by sending crafted DNS packets that match a static Network Address Translation (NAT) rule with DNS inspection enabled through an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.

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

  • 9.12.4.39affected
  • 9.12.4.40affected
  • 9.14.4.6affected
  • 9.14.4.7affected
  • 9.12.4.41affected
  • 9.12.4.47affected
  • 9.14.4.12affected
  • 9.12.4.48affected
  • 9.14.4.13affected
  • 9.12.4.50affected
  • 9.14.4.14affected
  • 9.12.4.52affected
  • 9.14.4.15affected
  • 9.12.4.54affected
  • 9.14.4.17affected
  • 9.12.4.55affected
  • 9.14.4.22affected
  • 9.14.4.23affected
  • 9.12.4.56affected
  • 9.12.4.58affected
  • 9.12.4.62affected
  • 9.12.4.65affected
  • 9.12.4.67affected
  • 9.14.4.24affected

Cisco Cisco Firepower Threat Defense Software

Default version status: unknown

  • 6.6.5.2affected
  • 6.4.0.15affected
  • 6.6.7affected
  • 6.4.0.16affected
  • 6.6.7.1affected
  • 6.4.0.17affected
  • 6.6.7.2affected
  • 6.4.0.18affected

References