CVE-2023-4991: Quescom Nextbx Qwalerter

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

A vulnerability was found in NextBX QWAlerter 4.50. It has been rated as critical. Affected by this issue is some unknown functionality of the file QWAlerter.exe. The manipulation leads to unquoted search path. It is possible to launch the attack on the local host. The identifier of this vulnerability is VDB-239804. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

• Quescom Nextbx Qwalerter: version 4.50 only

Published 2023-09-15. Last modified 2026-06-17.