CVE-2025-20362

Published Sep 25, 2025

Last updated 7 hours ago

Overview

AI description

Automated description summarized from trusted sources.

CVE-2025-20362 is a vulnerability found in the VPN web server of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software. It could allow an unauthenticated, remote attacker to access restricted URL endpoints that should normally require authentication. This vulnerability is due to improper validation of user-supplied input in HTTP(S) requests. An attacker could exploit it by sending crafted HTTP requests to a targeted web server, potentially gaining access to restricted URLs without proper authentication. Cisco has released software updates to address this vulnerability.

Description: A vulnerability in the VPN web server of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to access restricted URL endpoints without authentication that should otherwise be inaccessible without authentication. This vulnerability is due to improper validation of user-supplied input in HTTP(S) requests. An attacker could exploit this vulnerability by sending crafted HTTP requests to a targeted web server on a device. A successful exploit could allow the attacker to access a restricted URL without authentication.
Source: psirt@cisco.com
NVD status: Received

Risk scores

CVSS 3.1

Type: Secondary
Base score: 6.5
Impact score: 2.5
Exploitability score: 3.9
Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Severity: MEDIUM

Known exploits

Data from CISA

Vulnerability name: Cisco Secure Firewall Adaptive Security (ASA) Appliance and Secure Firewall Threat Defense (FTD) Missing Authorization Vulnerability
Exploit added on: Sep 25, 2025
Exploit action due: Sep 26, 2025
Required action: The KEV due date refers to the deadline by which FCEB agencies are expected to review and begin implementing the guidance outlined in Emergency Directive (ED) 25-03 (URL listed below in Notes). Agencies must follow the mitigation steps provided by CISA (URL listed below in Notes) and vendor’s instructions (URL listed below in Notes). Adhere to the applicable BOD 22-01 guidance for cloud services or discontinue use of the product if mitigations are not available.

Weaknesses

psirt@cisco.com: CWE-862

Hype score is a measure of social media activity compared against trending CVEs from the past 12 months. Max score 100.

Hype score: 39

References

Sources include official advisories and independent security research.