CVE-2025-66575Public exploit

LocalSystem code execution via unquoted service path

Published Dec 4, 2025 · Updated Dec 5, 2025

Unquoted service path in VeePNService in VeePN 1.6.1 allows local users to execute code as LocalSystem during service start. The service registers C:\Program Files (x86)\VeePN\service\VeePNService.exe without quotation marks, so Windows can resolve and launch an attacker-planted executable from an earlier path segment. Exploitation requires local file-placement access and a service restart or reboot; successful code runs with LocalSystem privileges.

CVSS severity7.8
High
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unquoted service path in VeePNService in VeePN 1.6.1 allows local users to execute code as LocalSystem during service start. The service registers C:\Program Files (x86)\VeePN\service\VeePNService.exe without quotation marks, so Windows can resolve and launch an attacker-planted executable from an earlier path segment. Exploitation requires local file-placement access and a service restart or reboot; successful code runs with LocalSystem privileges.

The record

CVE
CVE-2025-66575
Published
Dec 4, 2025
Updated
Dec 5, 2025
Vendor
VeePN
Product
VeePN
Classifications
CWE-428, T1574.009
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 4, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 5, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.6.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

VeePN · VeePNversion=1.6.1

Published CVSS scores

8.5VulnCheckCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P
7.8NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-428Unquoted Search Path or Element
T1574.009Path Interception by Unquoted Path

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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