CVE-2021-41823

MEDIUM 6.1CVE-2021-41823 · Published 01/01/2023 · updated 17/06/2026

In short

CVE-2021-41823 is a MEDIUM (CVSS 6.1) vulnerability affecting web application firewall (kemptechnologies).
Chance of exploitation in the next 30 days (EPSS): 0.52%, higher than 44.0% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
web application firewall kemptechnologies	`= 7.2.54.1`	No fix yet

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

Running one of these products? Scan your site to see whether it exposes a vulnerable version.