Vulnerability record · CVE-2009-4118 · published 1 December 2009

CVE-2009-4118: Cisco vpn client vulnerability

Cisco · Vpn Client

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.

2.1 CVSS 2.0 Low EPSS 2.5% · top 15.8%

2.1CVSS 2.0 base score

2.5%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

10References, 4 tagged exploit

16 Jun 2026Last modified by NVD

Description

AV:L/AC:L/Au:N/C:N/I:N/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Vpn Client Cisco

References

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

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2009-4118), CISA KEV, FIRST EPSS (scores of 2026-10-03). This page is refreshed as NVD updates the record.