What is CVE-2025-20206?

CVE-2025-20206 is a high-severity vulnerability in Cisco Secure Client, classified under Improper Verification of Cryptographic Signature. CVSS score: 7.1/10. Published 2025-03-05.

How severe is CVE-2025-20206?

High severity. CVSS v3 base score is 7.1 out of 10.

Vulnerability in Cisco Secure Client

CVE-2025-20206

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…

EPSS: 0.002 (6.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

Affected products

Cisco Secure Client — versions 4.9.00086, 4.9.01095, 4.9.02028
Cisco Secure_client
Microsoft Windows

Weakness classification (CWE)

CWE-347 — Improper Verification of Cryptographic Signature

References

psirt@cisco.com (Vendor Advisory)

Frequently asked questions

What is CVE-2025-20206?: CVE-2025-20206 is a high-severity vulnerability in Cisco Secure Client, classified under Improper Verification of Cryptographic Signature. CVSS score: 7.1/10. Published 2025-03-05.
How severe is CVE-2025-20206?: High severity. CVSS v3 base score is 7.1 out of 10.