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CVE-2025-66266 Detail

Description

The RupsMon.exe service executable in UPSilon 2000 has insecure permissions, allowing the 'Everyone' group Full Control. A local attacker can replace the executable with a malicious binary to execute code with SYSTEM privileges or simply change the config path of the service to a command; starting and stopping the service to immediately achieve code execution and privilege escalation


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  Gridware
CVSS-B 9.3 CRITICAL
Vector:  CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N

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URL Source(s) Tag(s)
https://www.megatec.com.tw/software-download/ Gridware

Weakness Enumeration

CWE-ID CWE Name Source
CWE-269 Improper Privilege Management Gridware  

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2025-66266
NVD Published Date:
11/25/2025
NVD Last Modified:
11/25/2025
Source:
Gridware