CVE-2021-47890

HIGH

LogonExpert 8.1 - Privilege Escalation

Title source: llm

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.

Exploits (1)

exploitdb WRITEUP
by Victor Mondragón · textlocalwindows
https://www.exploit-db.com/exploits/49586

References (4)

Scores

CVSS v3 7.8
EPSS 0.0002
EPSS Percentile 4.7%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact total

Details

CWE
CWE-428
Status published
Published Jan 23, 2026
Tracked Since Feb 18, 2026