CVE-2025-66264
Unquoted Service path in UPSilon2000V6.0 SYSTEM privilege service
Description
The CMService.exe service runs with SYSTEM privileges and contains an unquoted service path. This allows a local attacker with write privileges to the filesystem to insert a malicious executable in the path, leading to privilege escalation.
INFO
Published Date :
Nov. 26, 2025, 1:16 a.m.
Last Modified :
Nov. 26, 2025, 1:16 a.m.
Remotely Exploit :
No
Source :
b7efe717-a805-47cf-8e9a-921fca0ce0ce
Affected Products
The following products are affected by CVE-2025-66264
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 4.0 | HIGH | b7efe717-a805-47cf-8e9a-921fca0ce0ce | ||||
| CVSS 4.0 | HIGH | b7efe717-a805-47cf-8e9a-921fca0ce0ce |
Solution
- Ensure CMService.exe path is properly quoted.
- Remove write permissions for unauthorized users.
- Restart the affected service.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-66264.
| URL | Resource |
|---|---|
| https://www.megatec.com.tw/software-download/ |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-66264 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-66264
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-66264 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-66264 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by b7efe717-a805-47cf-8e9a-921fca0ce0ce
Nov. 26, 2025
Action Type Old Value New Value Added Description The CMService.exe service runs with SYSTEM privileges and contains an unquoted service path. This allows a local attacker with write privileges to the filesystem to insert a malicious executable in the path, leading to privilege escalation. Added CVSS V4.0 AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:L/SC:H/SI:H/SA:H/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 Added CWE CWE-428 Added Reference https://www.megatec.com.tw/software-download/