Skip to content
Noroxi
CVE-2009-4118· NVD / CVE Program· CNA mitre

The StartServiceCtrlDispatcher function in the cvpnd service (cvpnd.exe) in Cisco VPN client for Windows before 5.0.06.0100 does not properl

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.

LowCVSS 2.1 · v2.0—Proof of concept No fix recorded
Published
Nov 30, 2009
Updated
Jun 16, 2026
EPSS
2.5% · 84th percentile
CWE
—
Follow this CVE

Sign in to follow · You’ll be notified if a followed record enters KEV, gets an exploit or is updated.

Report tools

JSON

Action score

9

Monitor

Low priority for now.

CVSS
8 / 40 · 2.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 2.5%

Affected systems

VendorProduct
ciscovpn client

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • cisco vpn client0490
  • cisco vpn client2.0
  • cisco vpn client3.0
  • cisco vpn client3.0.5
  • cisco vpn client3.1
  • cisco vpn client3.5.1
  • cisco vpn client3.5.1c
  • cisco vpn client3.5.2
  • cisco vpn client3.6.5
  • cisco vpn client4.7.00.0000
  • cisco vpn client4.8.00.0000
  • cisco vpn client4.8.00.0440
  • cisco vpn client4.8.01
  • cisco vpn client4.8.02.0010
  • cisco vpn client4.8.1
  • cisco vpn client4.9
  • cisco vpn client5.0.00.340
  • cisco vpn client5.0.01
  • cisco vpn client5.0.01.0600
  • cisco vpn client5.0.02.0090

Same product

cisco: all records

Other highest-scoring records for the same primary product.

  • CVE-2002-1107Cisco Virtual Private Network (VPN) Client software 2.x.x, and 3.x before 3.5.2B, does not generate sufficiently random numbers, which may m
    31Monitor
  • CVE-2002-1106Cisco Virtual Private Network (VPN) Client software 2.x.x, and 3.x before 3.5.1C, does not properly verify that certificate DN fields match
    30Monitor
  • CVE-2015-7600Cisco VPN Client 5.x through 5.0.07.0440 uses weak permissions for vpnclient.ini, which allows local users to gain privileges by entering an
    28Monitor
  • CVE-2006-2679Unspecified vulnerability in the VPN Client for Windows Graphical User Interface (GUI) (aka the VPN client dialer) in Cisco VPN Client for W
    28Monitor
  • CVE-2002-1447Buffer overflow in the vpnclient program for UNIX VPN Client before 3.5.2 allows local users to gain administrative privileges via a long pr
    28Monitor
  • CVE-2012-3052Untrusted search path vulnerability in Cisco VPN Client 5.0 allows local users to gain privileges via a Trojan horse DLL in the current work
    27Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

Proof of concept available

A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.

Evidence

  • Exploit-DB entry ×1
  • Proof-of-concept repository on GitHub ×1

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Exploit-DB entrydos2009-11-21
Proof-of-concept repository on GitHubstars:02018-04-02

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. First PoC-10 d
  2. Published
  3. TodaySep 30, 2026+6148 d
EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
P · the service can be disrupted
Attack complexity
Low
Confidentiality impact
None
Integrity impact
None
Availability impact
P

Weakness class (CWE)

—

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records