CVE-2011-2039: cisco anyconnect_secure_mobility_client Improper Input Validation
Vulnerability summary
CVE-2011-2039 is a high (CVSS 7.6) Improper Input Validation vulnerability in cisco anyconnect_secure_mobility_client. EPSS estimates a 69.96% chance of exploitation in the next 30 days, higher than 99.3% of scored vulnerabilities. 2 public exploits are recorded.
Timeline
- 02-06-2011PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
1 score · 1 source · 1 versionEPSS trend
Probability
69.96%
Chance of exploitation in the next 30 days
Percentile
99%
Versus all other CVEs
30-day change
0.00 pp
From 69.96% on 21-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
2 foundCisco AnyConnect VPN Client ActiveX URL Property Download and Execute
exploit/windows/browser/cisco_anyconnect_exec
Maturity: weaponized
Cisco AnyConnect VPN Client - ActiveX URL Property Download and Execute (Metasploit)
Maturity: weaponized
Weaknesses
CWE · root causeAffected systems
Cisco1 product
- anyconnect_secure_mobility_client≤ 2.3 | 2.0 | 2.1 | 2.2 | 2.2.128 | 2.2.133 | 2.2.136 | 2.2.140
1 vendor · 1 product
References
7 links- www.cisco.com/en/US/products/products_security_advisory09186a0080b80123.shtmlVendor AdvisoryX Refsource CISCO
- labs.idefense.com/intelligence/vulnerabilities/display.php?id=909Third Party AdvisoryX Refsource IDEFENSE