CVE-2025-66265 MEDIUM

CVE-2025-66265: Insecure permissions in configuration directory (C:\\usr)

Vendor Megatec Taiwan
Product ClientMate
Weakness CWE-269
Published November 26, 2025
Last update November 26, 2025
View on NVD All CVEs

CVSS base score

6.9/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:L/SC:L/SI:L/SA:L

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

November 26, 2025 CVE published
November 26, 2025 Record updated