CVE-2011-2039

Name: CVE-2011-2039
Creator: NVD / NIST
Published: 2011-06-02T19:55:04.373+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 69.96%

Last modified Jun 16, 2026

CVE-2011-2039 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 69.96% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability

69.96%

99.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Cisco	Anyconnect Secure Mobility Client	<= 2.3
Cisco	Anyconnect Secure Mobility Client	2.0
Cisco	Anyconnect Secure Mobility Client	2.1
Cisco	Anyconnect Secure Mobility Client	2.2
Cisco	Anyconnect Secure Mobility Client	2.2.128
Cisco	Anyconnect Secure Mobility Client	2.2.133
Cisco	Anyconnect Secure Mobility Client	2.2.136
Cisco	Anyconnect Secure Mobility Client	2.2.140

References

Timeline

Published: Jun 2, 2011
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2011-2039?

How severe is CVE-2011-2039?

Severity scoring for CVE-2011-2039 is pending analysis. The EPSS model estimates a 69.96% probability of exploitation in the next 30 days.

How do I fix CVE-2011-2039?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2011-2039?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST