Riskcovery

CVE-2025-20134

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

State
Published
Severity
8.6 High
Published
Aug 14, 2025
Updated
Aug 19, 2025
Reserved
Oct 10, 2024

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.18.6 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:Hcisco

Weaknesses

Affected Products

ProductVersions
Cisco Adaptive Security Appliance (ASA) SoftwareCisco
  • 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 Firepower Threat Defense SoftwareCisco
  • 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

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