CVE-2020-3433 — Security Box Score

CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2020-3433HIGH

Cisco AnyConnect Secure Mobility Client for Windows DLL Hijacking Vulnerability

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   L   L   N  U  H  H  H    7.8   .1005   95.2   YES

AFFECTED
  Product                                  Versions  Fixed
  Cisco AnyConnect Secure Mobility Client  n/a –     —

TIMELINE
  Dec 12  Reserved by cisco
  Oct 24  Added to CISA KEV, remediation due 2022-11-14
  Oct 24  Published (CNA: cisco)
  Aug 12  EXPLOIT PUBLISHED — CVE-2020-3433 (Cisco AnyConnect Secure Mobility Client). Public exploit reference added.

CWE-427 · CNA: cisco · CVSS v3.1 · 3 references · NVD status: Analyzed · KEV due November 14, 2022

Description

A vulnerability in the interprocess communication (IPC) channel of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to perform a DLL hijacking attack. To exploit this vulnerability, the attacker would need to have valid credentials on the Windows system. The 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 the AnyConnect 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 would need to have valid credentials on the Windows system.

Lifecycle

Complete event history — 4 events, chronological
Date	Event	Detail
December 12, 2019	Reserved	Reserved by cisco
October 24, 2022	KEV ADDED	Added to CISA KEV, remediation due 2022-11-14
October 24, 2022	Published	Published (CNA: cisco)
August 12, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2020-3433 (Cisco AnyConnect Secure Mobility Client). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Cisco	Cisco AnyConnect Secure Mobility Client	—	n/a	—

Weaknesses

CWE-427

References (3)

http://packetstormsecurity.com/files/159420/Cisco-AnyConnect-Privilege-Escalation.html [Exploit, Third Party Advisory, VDB Entry]
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-anyconnect-dll-F26WwJW [Vendor Advisory]
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-3433 [US Government Resource]

Authoritative record: CVE-2020-3433 at cve.org

Vendors: cisco

Weaknesses: CWE-427

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2020-3433 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.