CVE-2025-4540Public exploit

Local privilege escalation via unquoted service path

Published May 11, 2025 · Updated May 23, 2025

Unquoted service path in MTSoftware C-Lodop 6.6.1.1 allows local users to gain SYSTEM privileges on Windows. The CLodopPrintService ImagePath omits quotes around a space-containing executable path, causing Windows to search an attacker-influenced prefix first. Exploitation requires low-privileged local access, write access to an earlier path segment, and a service restart or system reboot; successful execution runs attacker code as SYSTEM.

CVSS severity7.3
High
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Unquoted service path in MTSoftware C-Lodop 6.6.1.1 allows local users to gain SYSTEM privileges on Windows. The CLodopPrintService ImagePath omits quotes around a space-containing executable path, causing Windows to search an attacker-influenced prefix first. Exploitation requires low-privileged local access, write access to an earlier path segment, and a service restart or system reboot; successful execution runs attacker code as SYSTEM.

The record

CVE
CVE-2025-4540
Published
May 11, 2025
Updated
May 23, 2025
Vendor
MTSoftware
Product
C-Lodop
Classifications
CWE-426, CWE-428, T1574.009
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 11, 2025CVE publishedPublication date reported by the CVE source.
  2. May 23, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=6.6.1.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

MTSoftware · C-Lodopversion=6.6.1.1

Published CVSS scores

6.0VulDBAV:L/AC:H/Au:S/C:C/I:C/A:C
7.3VulDBCVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
7.0VulDBCVSS:3.1/AV:L/AC:H/PR:L/UI:N/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-426Untrusted Search Path
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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo