CVE-2025-66265: Megatec Taiwan Clientmate

Medium severity, CVSS 6.9. EPSS: 0.1% chance of exploitation in the next 30 days.

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.

Affected products

• Megatec Taiwan Clientmate: version 6.2.2 only

Published 2025-11-26. Last modified 2026-06-17.