Riskcovery

CVE-2025-20243

Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software Remote Access SSL VPN Denial of Service Vulnerability

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

Read the record on cve.org

Description

A vulnerability in the management and VPN web servers of Cisco Secure Firewall ASA Software and Secure FTD Software could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, resulting in a DoS condition.

This vulnerability is due to improper validation of user-supplied input on an interface with VPN web services. An attacker could exploit this vulnerability by sending crafted HTTP requests to a targeted web server on an affected device. A successful exploit could allow the attacker to cause a DoS condition when the device reloads.

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

  • CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop')

Affected Products

ProductVersions
Cisco Adaptive Security Appliance (ASA) SoftwareCisco
  • 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
  • and 195 more versions
Cisco Firepower Threat Defense SoftwareCisco
  • 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
  • and 69 more versions

References

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