Critical severityNVD Advisory· Published Nov 26, 2025· Updated Apr 15, 2026
CVE-2025-66266
CVE-2025-66266
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
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Affected products
1- Range: =2000
Patches
Vulnerability mechanics
References
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