{"id":"CVE-2011-2039","aliases":["EUVD-2011-2033","GHSA-vjg9-jfmj-x6jf"],"status":"published","title":"The helper application in Cisco AnyConnect Secure Mobility Client (formerly AnyConnect VPN Client...","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.","severity":{"version":"2.0","score":7.6,"vector":"AV:N/AC:H/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.69959,"percentile":0.99379,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-20"],"published":"2011-06-02T19:00:00Z","modified":"2026-06-16T23:30:37Z","exploits":[{"source":"exploitdb","id":"EDB-17366","title":"Cisco AnyConnect VPN Client - ActiveX URL Property Download and Execute (Metasploit)","type":"remote","platform":"windows","date":"2011-06-06","verified":true,"url":"https://www.exploit-db.com/exploits/17366"},{"source":"metasploit","id":"exploit/windows/browser/cisco_anyconnect_exec","title":"Cisco AnyConnect VPN Client ActiveX URL Property Download and Execute","type":"exploit","platform":"Windows","date":"2011-06-01","verified":true,"url":"https://www.rapid7.com/db/modules/exploit/windows/browser/cisco_anyconnect_exec"}],"products":[{"vendor":"cisco","product":"anyconnect_secure_mobility_client"}],"references":[{"url":"http://osvdb.org/72714","tags":["vdb-entry","x_refsource_OSVDB","x_transferred"]},{"url":"http://www.cisco.com/en/US/products/products_security_advisory09186a0080b80123.shtml","tags":["vendor-advisory","x_refsource_CISCO","x_transferred","Vendor Advisory"]},{"url":"http://securityreason.com/securityalert/8272","tags":["third-party-advisory","x_refsource_SREASON","x_transferred"]},{"url":"http://www.securitytracker.com/id?1025591","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred"]},{"url":"http://www.kb.cert.org/vuls/id/490097","tags":["third-party-advisory","x_refsource_CERT-VN","x_transferred","US Government Resource"]},{"url":"http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=909","tags":["third-party-advisory","x_refsource_IDEFENSE","x_transferred"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/67739","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-2039"},{"url":"https://github.com/advisories/GHSA-vjg9-jfmj-x6jf"}],"sources":{"cve":[{"id":"CVE-2011-2039","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.","status":"published","published":"2011-06-02T19:00:00Z","modified":"2024-08-06T22:46:00.841Z","updated_at":"2026-11-02T14:35:36.252742Z"}],"euvd":[{"id":"EUVD-2011-2033","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.","status":"published","published":"2011-06-02T19:00:00Z","modified":"2024-08-06T22:46:00Z","updated_at":"2026-11-03T01:55:54.133107Z"}],"ghsa":[{"id":"GHSA-vjg9-jfmj-x6jf","title":"The helper application in Cisco AnyConnect Secure Mobility Client (formerly AnyConnect VPN Client...","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.","status":"published","published":"2022-05-17T01:55:46Z","modified":"2023-02-03T05:05:52Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:53:48.81294Z"}],"nvd":[{"id":"CVE-2011-2039","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.","status":"published","published":"2011-06-02T19:55:04.373Z","modified":"2026-06-16T23:30:37.463Z","cvss":[{"version":"2.0","score":7.6,"vector":"AV:N/AC:H/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:02:08.47516Z"}]}}