CVE-2021-41823: Kemptechnologies Web Application Firewall

Medium severity, CVSS 6.1. EPSS: 0.5% chance of exploitation in the next 30 days.

The Web Application Firewall (WAF) in Kemp LoadMaster 7.2.54.1 allows certain uses of onmouseover to bypass an XSS protection mechanism.

Affected products

• Kemptechnologies Web Application Firewall: version 7.2.54.1 only

Published 2023-01-01. Last modified 2026-06-17.