CVE-2009-4118

Severity: low (CVSS 2.1 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2009-12-01 · updated 2026-06-16

Description

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.

Affected products

Cisco Vpn Client: 2.0, 3.0, 3.0.5, 3.1, 3.5.1, 3.5.1c (+15)

References

http://packetstormsecurity.org/0911-exploits/sybsec-adv17.txt
http://secunia.com/advisories/37419
http://tools.cisco.com/security/center/viewAlert.x?alertId=19445
http://www.securityfocus.com/bid/37077
http://www.vupen.com/english/advisories/2009/3296
http://packetstormsecurity.org/0911-exploits/sybsec-adv17.txt
http://secunia.com/advisories/37419
http://tools.cisco.com/security/center/viewAlert.x?alertId=19445
http://www.securityfocus.com/bid/37077
http://www.vupen.com/english/advisories/2009/3296

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