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CVE-2025-66271VulnerabilityPublished

CVE-2025-66271: ELECOM Clone for Windows · Unquoted search path or element

Affects ELECOM Clone for WindowsSource CVE Database V5

0

Not known to be exploited · CVSS 6.7 Medium : upgrade to 2.36 when convenient.

Data as of 26 Oct 2026, 07:57 UTC

CVSS 3.0 base score
6.7Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 4% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 2.36
CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 9 Dec 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.

What to do

Upgrade ELECOM Clone for Windows to 2.36.

Affected software

ProductAffectedFixed in
ELECOM CO.,LTD. Clone for WindowsAffected
  • <2.36
Fixed in
  • 2.36

AI-suggested

European organizations should implement the following specific mitigation measures: 1) Immediately audit and restrict write permissions on the root directory of the system drive to trusted administrators only, preventing unauthorized users from placing malicious executables. 2) Monitor and review Windows service configurations for unquoted service paths, especially for Clone for Windows and other third-party software, correcting any unquoted paths by quoting them properly or applying vendor patches. 3) Apply the official patch from ELECOM CO.,LTD. as soon as it becomes available for version 2.36 or later to remediate the vulnerability. 4) Employ endpoint detection and response (EDR) tools to detect suspicious file creation or execution activities in system directories. 5) Conduct regular privilege audits to ensure that users do not have unnecessary elevated permissions that could facilitate exploitation. 6) Implement application whitelisting to prevent unauthorized executables from running in sensitive directories. 7) Educate system administrators about the risks of unquoted service paths and the importance of secure service configuration. These targeted actions go beyond generic advice by focusing on the specific conditions that enable exploitation of this vulnerability.

Description

Clone for Windows provided by ELECOM CO.,LTD.registers a Windows service with an unquoted file path. A user with the write permission on the root directory of the system drive may execute arbitrary code with SYSTEM privilege.

References

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