CVE-2011-2039

Severity: high (CVSS 7.6 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 70.0% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2011-06-02 · updated 2026-06-16
Weakness: CWE-20

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.

Affected products

Cisco AnyConnect Secure Mobility Client: through 2.3; 2.0, 2.1, 2.2, 2.2.128, 2.2.133, 2.2.136 (+1)

References

http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=909
http://osvdb.org/72714
http://securityreason.com/securityalert/8272
http://www.cisco.com/en/US/products/products_security_advisory09186a0080b80123.shtml
http://www.kb.cert.org/vuls/id/490097
http://www.securitytracker.com/id?1025591
https://exchange.xforce.ibmcloud.com/vulnerabilities/67739
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=909
http://osvdb.org/72714
http://securityreason.com/securityalert/8272
http://www.cisco.com/en/US/products/products_security_advisory09186a0080b80123.shtml
http://www.kb.cert.org/vuls/id/490097

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