Vulnerability Monitor

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CVE-2011-2039

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.

Security Impact Summary

CVE-2011-2039 is a security vulnerability that . Impacting 3 products from cisco, from microsoft, from microsoft organizations running these solutions should prioritize assessment and patching.

Historical Context

Documented in 2011, this vulnerability occurred amid the cloud computing expansion era, where traditional network perimeter security models were being reevaluated. Organizations were transitioning from isolated infrastructure to interconnected systems, creating new attack surfaces that vulnerabilities like this could exploit.

Published

2011-06-02T19:55:04.373

Last Modified

2026-04-29T01:13:23.040

Status

Modified

Source

[email protected]

Severity

CVSSv2: 7.6 (HIGH)

CVSSv2 Vector

AV:N/AC:H/Au:N/C:C/I:C/A:C

Access Vector: NETWORK
Access Complexity: HIGH
Authentication: NONE
Confidentiality Impact: COMPLETE
Integrity Impact: COMPLETE
Availability Impact: COMPLETE

Exploitability Score

4.9

Impact Score

10.0

Weaknesses

Type: Primary
CWE-20

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	cisco	anyconnect_secure_mobility_client	≤ 2.3	Yes
Application	cisco	anyconnect_secure_mobility_client	2.0	Yes
Application	cisco	anyconnect_secure_mobility_client	2.1	Yes
Application	cisco	anyconnect_secure_mobility_client	2.2	Yes
Application	cisco	anyconnect_secure_mobility_client	2.2.128	Yes
Application	cisco	anyconnect_secure_mobility_client	2.2.133	Yes
Application	cisco	anyconnect_secure_mobility_client	2.2.136	Yes
Application	cisco	anyconnect_secure_mobility_client	2.2.140	Yes
Operating System	microsoft	windows	*	No
Operating System	microsoft	windows_mobile	*	No

References

http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=909 ([email protected])
http://osvdb.org/72714 ([email protected])
http://securityreason.com/securityalert/8272 ([email protected])
http://www.cisco.com/en/US/products/products_security_advisory09186a0080b80123.shtml Vendor Advisory ([email protected])
http://www.kb.cert.org/vuls/id/490097 US Government Resource ([email protected])
http://www.securitytracker.com/id?1025591 ([email protected])
https://exchange.xforce.ibmcloud.com/vulnerabilities/67739 ([email protected])
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=909 (af854a3a-2127-422b-91ae-364da2661108)
http://osvdb.org/72714 (af854a3a-2127-422b-91ae-364da2661108)
http://securityreason.com/securityalert/8272 (af854a3a-2127-422b-91ae-364da2661108)
http://www.cisco.com/en/US/products/products_security_advisory09186a0080b80123.shtml Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.kb.cert.org/vuls/id/490097 US Government Resource (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id?1025591 (af854a3a-2127-422b-91ae-364da2661108)
https://exchange.xforce.ibmcloud.com/vulnerabilities/67739 (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For cisco's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.