Vulnerability Monitor

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CVE-2009-4118

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.

Security Impact Summary

CVE-2009-4118 is a security vulnerability that . Impacting 1 product from cisco organizations running these solutions should prioritize assessment and patching.

Historical Context

Originally identified in 2009, this vulnerability predates many modern security frameworks and practices. The vulnerability landscape of that era was characterized by different threat models and less mature defense mechanisms compared to contemporary standards.

Published

2009-12-01T00:30:00.233

Last Modified

2026-06-16T23:13:04.523

Status

Modified

Source

[email protected]

Severity

CVSSv2: 2.1 (LOW)

CVSSv2 Vector

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

Access Vector: LOCAL
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

3.9

Impact Score

2.9

Weaknesses

Type: Primary
NVD-CWE-Other

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	cisco	vpn_client	2.0	Yes
Application	cisco	vpn_client	3.0	Yes
Application	cisco	vpn_client	3.0.5	Yes
Application	cisco	vpn_client	3.1	Yes
Application	cisco	vpn_client	3.5.1	Yes
Application	cisco	vpn_client	3.5.1c	Yes
Application	cisco	vpn_client	3.5.2	Yes
Application	cisco	vpn_client	3.6.5	Yes
Application	cisco	vpn_client	4.7.00.0000	Yes
Application	cisco	vpn_client	4.8.00.0000	Yes
Application	cisco	vpn_client	4.8.00.0440	Yes
Application	cisco	vpn_client	4.8.1	Yes
Application	cisco	vpn_client	4.8.01	Yes
Application	cisco	vpn_client	4.8.02.0010	Yes
Application	cisco	vpn_client	4.9	Yes
Application	cisco	vpn_client	5.0.00.340	Yes
Application	cisco	vpn_client	5.0.01	Yes
Application	cisco	vpn_client	5.0.01.0600	Yes
Application	cisco	vpn_client	5.0.2.0090	Yes
Application	cisco	vpn_client	5.0.02.0090	Yes
Application	cisco	vpn_client	0490	Yes

References

http://packetstormsecurity.org/0911-exploits/sybsec-adv17.txt Exploit ([email protected])
http://secunia.com/advisories/37419 Vendor Advisory ([email protected])
http://tools.cisco.com/security/center/viewAlert.x?alertId=19445 Vendor Advisory ([email protected])
http://www.securityfocus.com/bid/37077 Exploit ([email protected])
http://www.vupen.com/english/advisories/2009/3296 Vendor Advisory ([email protected])
http://packetstormsecurity.org/0911-exploits/sybsec-adv17.txt Exploit (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/37419 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://tools.cisco.com/security/center/viewAlert.x?alertId=19445 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/37077 Exploit (af854a3a-2127-422b-91ae-364da2661108)
http://www.vupen.com/english/advisories/2009/3296 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For cisco's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.