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Findings

CVE-2020-3433

Cisco AnyConnect Secure Mobility Client for Windows DLL Hijacking Vulnerability

Published Aug 17, 2020 · updated Aug 11, 2026 · cisco anyconnect secure mobility client

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.

Timeline

Detection, updates, and resolution for this record.

  1. Aug 17, 2020 · Catalog

    Detected

    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 applicati

  2. Oct 24, 2022 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. Nov 14, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Aug 11, 2026 · Catalog

    Updated

    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 applicati

Required action

Apply updates per vendor instructions.

CISA due date Nov 14, 2022

Affected

  • cpe cisco/anyconnect secure mobility clientversion unspecified
  • vendor Cisco AnyConnect Secureversion unspecified

Sources

  • CISA KEVCVE-2020-3433

    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.gov
  • CVE.orgCVE-2020-3433

    Official CVE identifier

    cve.org
  • FIRST EPSSCVE-2020-3433

    30-day exploitation probability 10.0%

    first.org
  • Metasploit Modulesexploit_windows/local/anyconnect_lpe

    Public module reference (excellent). Module source is not copied into this catalog.

    rapid7.com
  • NIST NVDCVE-2020-3433

    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

    nvd.nist.gov
  • Packet Storm Securityhttp://packetstormsecurity.com/files/159420/Cisco-AnyConnect-Privilege-Escalation.html

    Packet Storm link already published on the finding.

    packetstormsecurity.com

References