CVE-2025-66265

MEDIUM EPSS 1.0%

Published Nov 26, 20257mo ago · Modified Jun 17, 20262w ago

6.9 CVSS 4.0

Medium

Published Nov 26, 2025 7mo ago

Last Modified Jun 17, 2026 2w ago

Description

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.

CVSS Details

Base Score

6.9

Exploitability

—

Impact

—

Vector string

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector Local

Attack Complexity Low

Privileges Required Low

User Interaction None

Scope X

Threat Intelligence

EPSS Exploit Probability

1.0% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-269 Improper Privilege Management Authorization

References 1

megatec.com.tw https://www.megatec.com.tw/software-download/

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.