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CVE-2009-4118

2.1 · LOW

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…

Published Dec 1, 2009ciscoEPSS 2.50%

Overview

CVE-2009-4118 is a low-severity vulnerability affecting cisco vpn_client. It was published on December 1, 2009 and has a CVSS 2.0 base score of 2.1 (LOW).

This vulnerability has a CVSS 2.0 base score of 2.1, rated LOW. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories and patches from cisco. Update vpn_client to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus

References

Refpacketstormsecurity.org/0911-exploits/sybsec-adv17.txtRefsecunia.com/advisories/37419Reftools.cisco.com/security/center/viewAlert.x?alertId=19445Refwww.securityfocus.com/bid/37077Refwww.vupen.com/english/advisories/2009/3296Refpacketstormsecurity.org/0911-exploits/sybsec-adv17.txtRefsecunia.com/advisories/37419Reftools.cisco.com/security/center/viewAlert.x?alertId=19445Refwww.securityfocus.com/bid/37077Refwww.vupen.com/english/advisories/2009/3296

How CyberStrike helps

Frequently asked questions

What is CVE-2009-4118?

CVE-2009-4118 is a low-severity vulnerability affecting cisco vpn_client. It was published on December 1, 2009 and has a CVSS 2.0 base score of 2.1 (LOW).

How severe is CVE-2009-4118?

This vulnerability has a CVSS 2.0 base score of 2.1, rated LOW. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2009-4118?

Check the references section for vendor advisories and patches from cisco. Update vpn_client to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2009-4118?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2009-4118 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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