CVE WatchAug 12, 2026

CVE-2020-3433

Cisco AnyConnect Secure Mobility Client for Windows DLL Hijacking Vulnerability

CVSS

7.8

High

EPSS

10.0%

p95

KEV

YES

Oct 24, 2022

Exploit Today

0-100

Published: Aug 17, 2020 · Last modified: Aug 12, 2026 · CWE-427

EPSS · 30d

10.0%EPSS · 30 days10.0%

2026-08-022026-08-31

KEV catalog record

Product

Cisco / AnyConnect Secure

Vulnerability

Cisco AnyConnect Secure Mobility Client for Windows DLL Hijacking Vulnerability

Added to KEV

Oct 24, 2022

Remediate by

Nov 14, 2022

Known ransomware use

Yes

Summary 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.

Required action

Apply updates per vendor instructions.

Notes

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-anyconnect-dll-F26WwJW; https://nvd.nist.gov/vuln/detail/CVE-2020-3433

Technical 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.

Official references

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