#VU105375 Improper Verification of Cryptographic Signature in Cisco Secure Client for Windows - CVE-2025-20206

Vulnerability identifier: #VU105375

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2025-20206

CWE-ID: CWE-347

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Cisco Secure Client for Windows
Other software / Other software solutions

Vendor: Cisco Systems, Inc

Description

The vulnerability allows a local user to compromise the target system.

The vulnerability exists due to insufficient validation of resources that are loaded by the application at run time within the interprocess communication (IPC) channel. A local user can send a specially crafted IPC message and execute arbitrary code on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Cisco Secure Client for Windows: before 5.1.8.105

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External links
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-secure-dll-injection-AOyzEqSg

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.