Input validation error in Cisco AsyncOS for Secure Web Appliance - CVE-2025-20183
Published: February 6, 2025
Vulnerability identifier: #VU103666
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N]
CVE-ID: CVE-2025-20183
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to improper handling of a crafted range request header in a policy-based Cisco Application Visibility and Control (AVC) implementation. A remote attacker can send a specially crafted HTTP request to evade the antivirus scanner and download a malicious file onto the endpoint.
Affected software
Cisco AsyncOS for Secure Web Appliance
How to mitigate CVE-2025-20183
Install updates from vendor's website.
Cisco AsyncOS for Secure Web Appliance - addressed in versions 15.0.1-004, 15.2.1-011