CVE-2025-20183
Cisco Secure Web Appliance Range Request Bypass Vulnerability
Description
A vulnerability in a policy-based Cisco Application Visibility and Control (AVC) implementation of Cisco AsyncOS Software for Cisco Secure Web Appliance could allow an unauthenticated, remote attacker to evade the antivirus scanner and download a malicious file onto an endpoint. The vulnerability is due to improper handling of a crafted range request header. An attacker could exploit this vulnerability by sending an HTTP request with a crafted range request header through the affected device. A successful exploit could allow the attacker to evade the antivirus scanner and download malware onto the endpoint without detection by Cisco Secure Web Appliance.
Weakness: CWE-20
Affected products
| Vendor | Product | Category | Matched by |
|---|---|---|---|
| Cisco | Cisco Secure Web Appliance | SASE / SSE / Secure Web | cna-assigner |
Vendor-reported products (1)
- Cisco · Cisco Secure Web Appliance
Vendor advisory
cisco-sa-swa-range-bypass-2BsEHYSu
Cisco Secure Web Appliance Range Request Bypass Vulnerability
Cisco’s rating: Medium (advisory CVSS 5.8) · Published Feb 5, 2025
Bug ID: CSCwk58287
The vendor’s rating applies to the whole advisory and can differ from this CVE’s own CVSS severity. Where this comes from