HOMEVULNERABILITIESCVE-2020-3433
HIGHCISA KEVIN THE WILD

CVE-2020-3433

Published: October 24, 2022

EPSS:4.46%probability of exploitation in 30 daysPercentile:88.9th

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.

NVD Source

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.

Added to KEV: 2022-10-24Federal patch deadline: 2022-11-14⚠ USED IN RANSOMWARE CAMPAIGNS
Required Action (CISA)

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.

Recommended Action

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.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

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

Mentioned vendors (from description):
Cisco
CPE data not yet available in NVD for this CVE.

Exploit & PoC Resources

ACTIVE EXPLOITATIONConfirmed exploitation in the wild
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All References (2)

Quick Facts

CVE IDCVE-2020-3433
SeverityHIGH
CISA KEVYES — Active Exploitation
ExploitIN THE WILD
EPSS (30d)4.46%
PublishedOct 24, 2022

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
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.