CISA-confirmed known exploited vulnerability

CVE-2020-3433

Cisco AnyConnect Secure Mobility Client for Windows DLL Hijacking Vulnerability

Cisco · AnyConnect Secure

Vulnerability details

Cisco AnyConnect Secure Mobility Client for Windows interprocess communication (IPC) channel allows for insufficient validation of resources that are loaded by the application at run time. An attacker with valid credentials on Windows could execute code on the affected machine with SYSTEM privileges.

Added to CISA KEV: 2022-10-24

Ransomware campaign use: Known

CISA due date: 2022-11-14

Defensive guidance from CISA

Apply updates per vendor instructions.

This is the source's required-action field, not an independently validated patch procedure. Refer to the vendor for exact affected versions and fixes.

Source catalog date: 2026-11-06T19:44:45.1797Z · Last retrieved: 2026-11-06 21:02:26 UTC

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