How severe is CVE-2025-66265?

CVE-2025-66265 has a CVSS 4.0 base score of 6.9, rated medium severity.

Is CVE-2025-66265 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-2025-66265?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-66265 have an EU (EUVD) identifier?

Yes. CVE-2025-66265 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-199667.

When was CVE-2025-66265 published?

CVE-2025-66265 was published on 2025-11-26 and last updated on 2026-06-17.

CVE-2025-66265

CVE-2025-66265 is a medium-severity vulnerability with a CVSS 4.0 base score of 6.9. 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-269.

Key facts

Severity: Medium (CVSS 4.0 base score 6.9)
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-199667
Weakness: CWE-269
Published: 2025-11-26
Last modified: 2026-06-17

Description

CMService.exe creates the C:\\usr directory and subdirectories with insecure permissions, granting write access to all authenticated users. This allows attackers to replace configuration files (such as snmp.conf) or hijack DLLs to escalate privileges.

Frequently asked questions

What is CVE-2025-66265?: CMService.exe creates the C:\\usr directory and subdirectories with insecure permissions, granting write access to all authenticated users. This allows attackers to replace configuration files (such as snmp.conf) or hijack DLLs to escalate privileges.
How severe is CVE-2025-66265?: CVE-2025-66265 has a CVSS 4.0 base score of 6.9, rated medium severity.
Is CVE-2025-66265 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-2025-66265?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-66265 have an EU (EUVD) identifier?: Yes. CVE-2025-66265 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-199667.
When was CVE-2025-66265 published?: CVE-2025-66265 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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