CVE-2009-4118

lowpriority · track · 19EPSS 0.025 · 85 %ileexploit · functionalEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

2 exploits · functional

Likely / severe?

2.50% (85th) EPSS

CVSS 2.1 · low

Is it mine?

22 products

Check your exposure

Who says so?

2 sources

enisa_euvd · nvd

EPSS · scored 2026-10-28

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.

cvss

Technical severity, 0–10. One row per scoring source.

2.1

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.02.1lowAV:L/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 3.9 · impact 2.9

v2.01.9lowAV:L/AC:L/Au:N/C:N/I:N/A:P/E:POCsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-399USLLM-inferredCWE-400USLLM-inferred

exploits (2)

Public proof-of-concept and weaponised exploit code.

EDB-10190Cisco VPN Client - Integer Overflow Denial of Servicefunctional · exploit_db
alt3kx/CVE-2009-4118Cisco VPN Client - Integer Overflow Denial of ServicePoC · poc_in_github

affected products (22)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
cisco vpn client= 0490nvdUScpe:2.3:a:cisco:vpn_client:*:*:*:*:*:*:*:*
cisco vpn client= 2.0nvdUScpe:2.3:a:cisco:vpn_client:*:*:*:*:*:*:*:*
cisco vpn client= 3.0nvdUScpe:2.3:a:cisco:vpn_client:*:*:*:*:*:*:*:*
cisco vpn client= 3.0.5nvdUScpe:2.3:a:cisco:vpn_client:*:*:*:*:*:*:*:*
cisco vpn client= 3.1nvdUScpe:2.3:a:cisco:vpn_client:*:*:*:*:*:*:*:*
cisco vpn client= 3.5.1nvdUScpe:2.3:a:cisco:vpn_client:*:*:*:*:*:*:*:*
cisco vpn client= 3.5.1cnvdUScpe:2.3:a:cisco:vpn_client:*:*:*:*:*:*:*:*
cisco vpn client= 3.5.2nvdUScpe:2.3:a:cisco:vpn_client:*:*:*:*:*:*:*:*
cisco vpn client= 3.6.5nvdUScpe:2.3:a:cisco:vpn_client:*:*:*:*:*:*:*:*
cisco vpn client= 4.7.00.0000nvdUScpe:2.3:a:cisco:vpn_client:*:*:*:*:*:*:*:*
cisco vpn client= 4.8.00.0000nvdUScpe:2.3:a:cisco:vpn_client:*:*:*:*:*:*:*:*
cisco vpn client= 4.8.00.0440nvdUScpe:2.3:a:cisco:vpn_client:*:*:*:*:*:*:*:*
cisco vpn client= 4.8.01nvdUScpe:2.3:a:cisco:vpn_client:*:*:*:*:*:*:*:*
cisco vpn client= 4.8.02.0010nvdUScpe:2.3:a:cisco:vpn_client:*:*:*:*:*:*:*:*
cisco vpn client= 4.8.1nvdUScpe:2.3:a:cisco:vpn_client:*:*:*:*:*:*:*:*
cisco vpn client= 4.9nvdUScpe:2.3:a:cisco:vpn_client:*:*:*:*:*:*:*:*
cisco vpn client= 5.0.00.340nvdUScpe:2.3:a:cisco:vpn_client:*:*:*:*:*:*:*:*
cisco vpn client= 5.0.01nvdUScpe:2.3:a:cisco:vpn_client:*:*:*:*:*:*:*:*
cisco vpn client= 5.0.01.0600nvdUScpe:2.3:a:cisco:vpn_client:*:*:*:*:*:*:*:*

showing 20 of 22

also known as (2)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

enisa_euvd nvd NVD CVE.org MITRE

published 2009-12-01modified 2026-06-16

references (10)

External citations — patches, advisories, analysis.

scry

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