CVE-2025-66265

Severity CVSS v4.0:

MEDIUM

Type:

CWE-269 Improper Privilege Management

Publication date:

26/11/2025

Last modified:

26/11/2025

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.

Impact

Vector 4.0

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 CVSS v4.0 Severity and Metrics:

Base Score: 6.90 MEDIUM
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

Attack Vector (AV): Local
Attack Complexity (AC): Low
Attack Requirements (AT): None
Privileges Required (PR): Low
User Interaction (UI): None
Confidentiality (VC): Low
Integrity (VI): High
Availability (VA): Low
Confidentiality (SC): Low
Integrity (SI): Low
Availability (SA): Low

Base Score 4.0

6.90

Severity 4.0

MEDIUM

References to Advisories, Solutions, and Tools

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