Privilege escalation in Megatec Taiwan Clientmate
CVE-2025-66265
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.
Vulnerability class: Privilege Escalation
EPSS: 0.001 (1.5th percentile) — read the EPSS interpretation.
Affected products
- Megatec Taiwan Clientmate — versions 6.2.2