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.

INFO

Published Date :

2025-08-14T16:29:21.309Z

Last Modified :

2025-08-14T19:19:56.383Z

Source :

cisco
AFFECTED PRODUCTS

The following products are affected by CVE-2025-20243 vulnerability.

Vendors Products
Cisco
  • Adaptive Security Appliance Software
  • Firepower Threat Defense Software
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-20243.

URL Resource
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-vpn-dos-mfPekA6e cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact