CVE-2025-66266: UPSilon2000V6.0 6.0.5

Affected technology

UPSilon2000V6.0 · 6.0.5
MegaTec Taiwan

Component: Not specified by the source

Attack conditions (Source advisory, CVSS 4.0): Local · No privileges required · No user interaction required

What an attacker can do

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. Source advisory’s CVSS 4.0 assessment (base score 9.3/10) rates confidentiality and integrity impact as high; availability impact as none.