LogonExpert 8.1 contains an unquoted service path vulnerability in the LogonExpertSvc service running with LocalSystem privileges. Attackers can exploit the unquoted path to place malicious executables in intermediate directories, potentially gaining elevated system access during service startup.
Advisories

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Fixes

Solution

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Workaround

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History

Fri, 23 Jan 2026 20:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 23 Jan 2026 17:00:00 +0000

Type Values Removed Values Added
Description LogonExpert 8.1 contains an unquoted service path vulnerability in the LogonExpertSvc service running with LocalSystem privileges. Attackers can exploit the unquoted path to place malicious executables in intermediate directories, potentially gaining elevated system access during service startup.
Title LogonExpert 8.1 - 'LogonExpertSvc' Unquoted Service Path
Weaknesses CWE-428
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.5, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-01-23T19:17:52.210Z

Reserved: 2026-01-18T12:35:05.173Z

Link: CVE-2021-47890

cve-icon Vulnrichment

Updated: 2026-01-23T19:17:49.972Z

cve-icon NVD

Status : Received

Published: 2026-01-23T17:15:52.323

Modified: 2026-01-23T17:15:52.323

Link: CVE-2021-47890

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses