CVE-2021-47890

HIGH

7.8

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.

CVE Details

CVSS v3.1 Score7.8

SeverityHIGH

CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack VectorLOCAL

ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

Published1/23/2026

Last Modified1/26/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-428

References

https://download.logonexpert.com/LogonExpertSetup64.msi(disclosure@vulncheck.com)

https://www.exploit-db.com/exploits/49586(disclosure@vulncheck.com)

https://www.softros.com/(disclosure@vulncheck.com)

https://www.vulncheck.com/advisories/logonexpert-logonexpertsvc-unquoted-service-path(disclosure@vulncheck.com)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.