CVE-2020-3433
Published: October 24, 2022
Official Description
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.
CISA KEV Advisory
Cisco AnyConnect Secure Mobility Client for Windows DLL Hijacking Vulnerability
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.
Apply updates per vendor instructions.
Risk Analysis
The Cisco AnyConnect Secure Mobility Client for Windows has an insufficient validation vulnerability in its interprocess communication (IPC) channel. This allows an authenticated attacker with valid Windows credentials to execute code with SYSTEM privileges. Its inclusion in CISA's KEV catalog and an EPSS score of 0.04462 indicate a significant and urgent risk of active exploitation.
This vulnerability is actively exploited in the wild, as confirmed by its presence in CISA's KEV catalog. Exploitation requires local authenticated access.
Users of Cisco AnyConnect Secure Mobility Client for Windows should update to a patched version to address the IPC channel vulnerability. Ensure all systems have the latest security updates.
Technical Analysis
CVE-2020-3433 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CISA has added CVE-2020-3433 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.
Affected Vendors & Products
Exploit & PoC Resources
All References (2)
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2020-3433 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
- !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
- !Active exploitation confirmed — treat as P1