High 7.8Published Jan 23, 2026

CVE-2021-47890LogonExpert 8.1 - 'LogonExpertSvc' Unquoted Service Path

Updated under an hour ago (Oct 27, 2026, 7:30 AM ET)

Does this affect you?

It affects Softros Systems LogonExpert. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for Softros Systems LogonExpert

Exploited in the last 30 days

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.

CVSS: 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-428
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Jan 23, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Softros Systems LogonExpert softros_systems:logonexpert (from the name)	8.1	CNA record

References

References

https://www.exploit-db.com/exploits/49586	exploit
https://www.softros.com/	product
https://download.logonexpert.com/LogonExpertSetup64.msi	product
https://www.vulncheck.com/advisories/logonexpert-logonexpertsvc-unquoted-service-path	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.