CVE-2009-4118

Exp

The StartServiceCtrlDispatcher function in the cvpnd service (cvpnd.exe) in Cisco VPN client for Windows before 5.0.06.0100 does not properly handle an ERROR_FAILED_SERVICE_CONTROLLER_CONNECT error, which allows local users to cause a denial of service (service crash and VPN connection loss) via a manual start of cvpnd.exe while the cvpnd service is running.

Published: 2009-11-30 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2009-4118 is rated Exploit Available (54.5/100): CVSS Low severity, with medium exploitation likelihood (EPSS 2.50%). 3 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +2.23% over the last day, indicating growing attacker interest. 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-2009-4118

EDB-ID Source Kind Published Link
10190 exploit_db edb 2009-11-21 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2009-4118

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 0.27% 2.50% +2.23%
2 2025-06-15 0.37% 0.27% -0.10%
3 2025-03-30 — 0.37% —

Full EPSS history (14 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2009-4118

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
2.1 2.0 LOW
AV:L/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 3.9 2.9 [email protected]

Weakness enumeration for CVE-2009-4118

Affected software / configurations for CVE-2009-4118

Vendor Product Version Raw CPE
cisco vpn_client 2.0 cpe:2.3:a:cisco:vpn_client:2.0:*:windows:*:*:*:*:*
cisco vpn_client 3.0 cpe:2.3:a:cisco:vpn_client:3.0:*:windows:*:*:*:*:*
cisco vpn_client 3.0.5 cpe:2.3:a:cisco:vpn_client:3.0.5:*:windows:*:*:*:*:*
cisco vpn_client 3.1 cpe:2.3:a:cisco:vpn_client:3.1:*:windows:*:*:*:*:*
cisco vpn_client 3.5.1 cpe:2.3:a:cisco:vpn_client:3.5.1:*:windows:*:*:*:*:*
cisco vpn_client 3.5.1c cpe:2.3:a:cisco:vpn_client:3.5.1c:*:windows:*:*:*:*:*
cisco vpn_client 3.5.2 cpe:2.3:a:cisco:vpn_client:3.5.2:*:windows:*:*:*:*:*
cisco vpn_client 3.6.5 cpe:2.3:a:cisco:vpn_client:3.6.5:base:windows:*:*:*:*:*
cisco vpn_client 4.7.00.0000 cpe:2.3:a:cisco:vpn_client:4.7.00.0000:*:windows:*:*:*:*:*
cisco vpn_client 4.8.00.0000 cpe:2.3:a:cisco:vpn_client:4.8.00.0000:*:windows:*:*:*:*:*
cisco vpn_client 4.8.00.0440 cpe:2.3:a:cisco:vpn_client:4.8.00.0440:*:windows:*:*:*:*:*
cisco vpn_client 4.8.1 cpe:2.3:a:cisco:vpn_client:4.8.1:*:windows:*:*:*:*:*
cisco vpn_client 4.8.01 cpe:2.3:a:cisco:vpn_client:4.8.01:base:windows:*:*:*:*:*
cisco vpn_client 4.8.02.0010 cpe:2.3:a:cisco:vpn_client:4.8.02.0010:base:windows:*:*:*:*:*
cisco vpn_client 4.9 cpe:2.3:a:cisco:vpn_client:4.9:base:windows:*:*:*:*:*
cisco vpn_client 5.0.00.340 cpe:2.3:a:cisco:vpn_client:5.0.00.340:base:windows:*:*:*:*:*
cisco vpn_client 5.0.01 cpe:2.3:a:cisco:vpn_client:5.0.01:*:windows:*:*:*:*:*
cisco vpn_client 5.0.01.0600 cpe:2.3:a:cisco:vpn_client:5.0.01.0600:base:windows:*:*:*:*:*
cisco vpn_client 5.0.2.0090 cpe:2.3:a:cisco:vpn_client:5.0.2.0090:*:windows:*:*:*:*:*
cisco vpn_client 5.0.02.0090 cpe:2.3:a:cisco:vpn_client:5.0.02.0090:base:windows:*:*:*:*:*
cisco vpn_client 0490 cpe:2.3:a:cisco:vpn_client:0490:base:windows:*:*:*:*:*

References for CVE-2009-4118

cvelogic Threat Intelligence