CVE-2025-20206
Cisco Secure Client for Windows with VPN Posture (HostScan) Module DLL Hijacking Vulnerability
Description
A vulnerability in the interprocess communication (IPC) channel of Cisco Secure Client for Windows could allow an authenticated, local attacker to perform a DLL hijacking attack on an affected device if the Secure Firewall Posture Engine, formerly HostScan, is installed on Cisco Secure Client. This vulnerability is due to insufficient validation of resources that are loaded by the application at run time. An attacker could exploit this vulnerability by sending a crafted IPC message to a specific Cisco Secure Client process. A successful exploit could allow the attacker to execute arbitrary code on the affected machine with SYSTEM privileges. To exploit this vulnerability, the attacker must have valid user credentials on the Windows system.
Weakness: CWE-347
Affected products
| Vendor | Product | Category | Matched by |
|---|---|---|---|
| Cisco | Cisco Secure Client (AnyConnect) | VPN & Remote Access | cna-assigner |
Vendor-reported products (1)
- Cisco · Cisco Secure Client
Vendor advisory
cisco-sa-secure-dll-injection-AOyzEqSg
Cisco Secure Client for Windows with Secure Firewall Posture Engine DLL Hijacking Vulnerability
Cisco’s rating: High (advisory CVSS 7.1) · Published Mar 5, 2025
Bug ID: CSCwn03265
The vendor’s rating applies to the whole advisory and can differ from this CVE’s own CVSS severity. Where this comes from