How severe is CVE-2025-66269?

CVE-2025-66269 has a CVSS 4.0 base score of 7.1, rated high severity.

Is CVE-2025-66269 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-2025-66269?

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-2025-66269 have an EU (EUVD) identifier?

Yes. CVE-2025-66269 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-199687.

When was CVE-2025-66269 published?

CVE-2025-66269 was published on 2025-11-26 and last updated on 2026-06-17.

CVE-2025-66269

CVE-2025-66269 is a high-severity vulnerability with a CVSS 4.0 base score of 7.1. 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 7.1)
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-199687
Weakness: CWE-428
Published: 2025-11-26
Last modified: 2026-06-17

Description

The RupsMon and USBMate services in UPSilon 2000 run with SYSTEM privileges and contain unquoted service paths. This allows a local attacker to perform path interception and escalate privileges if they have write permissions to the directories proceeding that of which the real service executables live in

Frequently asked questions

What is CVE-2025-66269?: The RupsMon and USBMate services in UPSilon 2000 run with SYSTEM privileges and contain unquoted service paths. This allows a local attacker to perform path interception and escalate privileges if they have write permissions to the directories proceeding that of which the real service executables live in
How severe is CVE-2025-66269?: CVE-2025-66269 has a CVSS 4.0 base score of 7.1, rated high severity.
Is CVE-2025-66269 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-2025-66269?: 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-2025-66269 have an EU (EUVD) identifier?: Yes. CVE-2025-66269 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-199687.
When was CVE-2025-66269 published?: CVE-2025-66269 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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