Cisco has released a security advisory to address a vulnerability in its Secure Client for Windows.
Secure Client is Cisco’s endpoint virtual private network (VPN) solution. CVE-2025-20206 has a CVSSv3 score of 7.1 and if exploited could allow an authenticated, local attacker to achieve arbitrary code execution (ACE) on the affected machine with SYSTEM privileges via DLL hijacking. The vulnerability only affects the Windows version of Secure Client, and only affects Secure Clients with the Secure Firewall Posture Engine module installed.
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Source: NHS Digital
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