CVE-2011-2039: Cisco AnyConnect Secure Mobility Client

High severity, CVSS 7.6. EPSS: 70% chance of exploitation in the next 30 days.

The helper application in Cisco AnyConnect Secure Mobility Client (formerly AnyConnect VPN Client) before 2.3.185 on Windows, and on Windows Mobile, downloads a client executable file (vpndownloader.exe) without verifying its authenticity, which allows remote attackers to execute arbitrary code via the url property to a certain ActiveX control in vpnweb.ocx, aka Bug ID CSCsy00904.

Affected products

• Cisco AnyConnect Secure Mobility Client: up to and including 2.3; version 2.0 only; version 2.1 only; version 2.2 only; version 2.2.128 only; version 2.2.133 only; …

Published 2011-06-02. Last modified 2026-06-16.