CVE-2025-66271

MEDIUMNVD 6.76.7—

6.7

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.

CVSS v3: 6.7
EG Score: 6.7(medium)
EPSS: 3.7%
KEV: Not listed

Published

December 9, 2025

Last Modified

April 15, 2026

References (2)

vultures@jpcerthttps://jvn.jp/en/jp/JVN33172708/
vultures@jpcerthttps://www.elecom.co.jp/news/security/20251209-01/

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-428Unquoted Search Path or Element

Data Freshness Timeline

(refreshed 13× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-05 06:10 UTCepss_batch
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Frequently asked(5)

What is CVE-2025-66271?

CVE-2025-66271 is a medium vulnerability published on December 9, 2025. 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.

When was CVE-2025-66271 disclosed?

CVE-2025-66271 was first published in the National Vulnerability Database on December 9, 2025, with the most recent update on April 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2025-66271 actively exploited?

CVE-2025-66271 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 3.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2025-66271?

CVE-2025-66271 has a CVSS v3 base score of 6.7 (NVD).

How do I remediate CVE-2025-66271?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-66271, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2025-66271

📅 Published

🔄 Last Modified

🔗 References (2)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2025-66271?

🔗 Related CVEs(same CWE)

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Published

Last Modified

References (2)

Frequently asked(5)

Related CVEs(same CWE)