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CVE-2025-66269— Unquoted Service Path in UPSilon2000V6.0(RupsMon and USBMate) running as SYSTEM

Quick assessment

Affected
MegaTec Taiwan UPSilon2000V6.0
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

MegaTec UPSilon2000是中国台湾鼎坚（MegaTec）公司的一个不间断电源监控和控制软件。 MegaTec UPSilon2000存在安全漏洞，该漏洞源于未加引号的服务路径，可能导致权限提升。

AI Predicted 7.8 Difficulty: Easy EPSS 0.12% · P2
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I. Basic Information for CVE-2025-66269

Vulnerability Information
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Vulnerability Title
Unquoted Service Path in UPSilon2000V6.0(RupsMon and USBMate) running as SYSTEM
Source: CVE Program / CVE List V5
Vulnerability Description
The RupsMon and USBMate services in UPSilon 2000 run with SYSTEM privileges and contain unquoted service paths. This allows a local attacker to perform path interception and escalate privileges if they have write permissions to the directories proceeding that of which the real service executables live in
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:L/SC:H/SI:L/SA:L
Source: CVE Program / CVE List V5
Vulnerability Type
未经引用的搜索路径或元素
Source: CVE Program / CVE List V5
Vulnerability Title
MegaTec UPSilon2000 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MegaTec UPSilon2000是中国台湾鼎坚（MegaTec）公司的一个不间断电源监控和控制软件。 MegaTec UPSilon2000存在安全漏洞，该漏洞源于未加引号的服务路径，可能导致权限提升。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
MegaTec Taiwan UPSilon2000V6.0 6.0.5 -

II. Public POCs for CVE-2025-66269

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III. Intelligence Information for CVE-2025-66269

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Same Patch Batch · MegaTec Taiwan · 2025-11-26 · 4 CVEs total

CVE-2025-66264 Unquoted Service path in UPSilon2000V6.0 SYSTEM privilege service
CVE-2025-66265 Insecure permissions in configuration directory (C:\\usr)
CVE-2025-66266 Insecure SYSTEM Service Permissions in UPSilon2000V6.0 (RupsMon.exe) leading to trivial Lo

IV. Related Vulnerabilities

Same product: UPSilon2000V6.0
Same vendor: MegaTec Taiwan
Same weakness: CWE-428

V. Comments for CVE-2025-66269

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