{"id":"CVE-2025-66264","aliases":["EUVD-2025-199668","GHSA-hhgj-xcf6-9r3p"],"status":"published","title":"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.","severity":{"version":"4.0","score":7.2,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:L/SC:H/SI:H/SA:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00126,"percentile":0.02317,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-428"],"published":"2025-11-26T01:09:51Z","modified":"2026-10-18T20:10:00Z","products":[{"vendor":"megatec taiwan","product":"clientmate"}],"references":[{"url":"https://www.megatec.com.tw/software-download/"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-66264"},{"url":"https://www.megatec.com.tw/software-download"},{"url":"https://github.com/advisories/GHSA-hhgj-xcf6-9r3p"}],"sources":{"cve":[{"id":"CVE-2025-66264","title":"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.","status":"published","published":"2025-11-26T01:09:51.506Z","modified":"2025-11-26T16:09:51.264Z","cvss":[{"version":"4.0","score":7.2,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:L/SC:H/SI:H/SA:H","level":"high","assessor":"cna"}],"cwes":["CWE-428"],"updated_at":"2026-11-02T14:32:53.157279Z"}],"euvd":[{"id":"EUVD-2025-199668","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.","status":"published","published":"2025-11-26T01:09:51Z","modified":"2025-11-26T16:09:51Z","cvss":[{"version":"4.0","score":7.2,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:L/SC:H/SI:H/SA:H","level":"high"}],"updated_at":"2026-11-02T19:49:12.440244Z"}],"ghsa":[{"id":"GHSA-hhgj-xcf6-9r3p","title":"The CMService.exe service runs with SYSTEM privileges and contains an unquoted service path. This...","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.","status":"published","published":"2025-11-26T03:30:21Z","modified":"2025-11-26T03:30:28Z","cvss":[{"version":"4.0","score":7.2,"vector":"CVSS:4.0/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","level":"high"}],"cwes":["CWE-428"],"updated_at":"2026-11-02T15:04:58.071945Z"}],"nvd":[{"id":"CVE-2025-66264","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.","status":"published","published":"2025-11-26T01:16:10.023Z","modified":"2026-10-18T20:10:00.11Z","cvss":[{"version":"4.0","score":7.2,"vector":"CVSS:4.0/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","level":"high","assessor":"secondary"}],"cwes":["CWE-428"],"updated_at":"2026-11-02T14:11:46.94029Z"}]}}