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, 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.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.002 (6.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 6th percentile — 6.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Cisco Secure Client — versions 4.9.00086, 4.9.01095, 4.9.02028
- Cisco Secure Client
- Microsoft Windows
Weakness classification (CWE)
References
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.