How severe is CVE-2025-66264?

CVE-2025-66264 has a CVSS 4.0 base score of 7.2, rated high severity.

Is CVE-2025-66264 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-66264?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-66264 have an EU (EUVD) identifier?

Yes. CVE-2025-66264 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-199668.

When was CVE-2025-66264 published?

CVE-2025-66264 was published on 2025-11-26 and last updated on 2026-06-17.

CVE-2025-66264

CVE-2025-66264 is a high-severity vulnerability with a CVSS 4.0 base score of 7.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-428.

Key facts

Severity: High (CVSS 4.0 base score 7.2)
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-199668
Weakness: CWE-428
Published: 2025-11-26
Last modified: 2026-06-17

Description

The CMService.exe service runs with SYSTEM privileges and contains an unquoted service path. This allows a local attacker with write privileges to the filesystem to insert a malicious executable in the path, leading to privilege escalation.

Frequently asked questions

What is CVE-2025-66264?: The CMService.exe service runs with SYSTEM privileges and contains an unquoted service path. This allows a local attacker with write privileges to the filesystem to insert a malicious executable in the path, leading to privilege escalation.
How severe is CVE-2025-66264?: CVE-2025-66264 has a CVSS 4.0 base score of 7.2, rated high severity.
Is CVE-2025-66264 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-66264?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-66264 have an EU (EUVD) identifier?: Yes. CVE-2025-66264 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-199668.
When was CVE-2025-66264 published?: CVE-2025-66264 was published on 2025-11-26 and last updated on 2026-06-17.

References

https://www.megatec.com.tw/software-download/

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