CVE-2011-2039

Exp

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.

Published: 2011-06-02 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2011-2039 is rated High Exploit Risk (75.2/100): CVSS High severity, with high exploitation likelihood (EPSS 69.96%, 99th percentile). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2011-2039

EDB-ID Source Kind Published Link
17366 exploit_db edb 2011-06-06 Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2011-2039

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 84.12% 69.96% -14.16%
2 2025-09-19 85.34% 84.12% -1.22%
3 2025-03-17 — 85.34% —

Full EPSS history (20 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-2039

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.6 2.0 HIGH
AV:N/AC:H/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:H)
Exploitation requires uncommon or highly specific conditions.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 4.9 10.0 [email protected]

Weakness enumeration for CVE-2011-2039

Affected software / configurations for CVE-2011-2039

Vendor Product Version Raw CPE
cisco anyconnect_secure_mobility_client <= 2.3 cpe:2.3:a:cisco:anyconnect_secure_mobility_client:*:*:*:*:*:*:*:*
cisco anyconnect_secure_mobility_client 2.0 cpe:2.3:a:cisco:anyconnect_secure_mobility_client:2.0:*:*:*:*:*:*:*
cisco anyconnect_secure_mobility_client 2.1 cpe:2.3:a:cisco:anyconnect_secure_mobility_client:2.1:*:*:*:*:*:*:*
cisco anyconnect_secure_mobility_client 2.2 cpe:2.3:a:cisco:anyconnect_secure_mobility_client:2.2:*:*:*:*:*:*:*
cisco anyconnect_secure_mobility_client 2.2.128 cpe:2.3:a:cisco:anyconnect_secure_mobility_client:2.2.128:*:*:*:*:*:*:*
cisco anyconnect_secure_mobility_client 2.2.133 cpe:2.3:a:cisco:anyconnect_secure_mobility_client:2.2.133:*:*:*:*:*:*:*
cisco anyconnect_secure_mobility_client 2.2.136 cpe:2.3:a:cisco:anyconnect_secure_mobility_client:2.2.136:*:*:*:*:*:*:*
cisco anyconnect_secure_mobility_client 2.2.140 cpe:2.3:a:cisco:anyconnect_secure_mobility_client:2.2.140:*:*:*:*:*:*:*

References for CVE-2011-2039

cvelogic Threat Intelligence