CVE-2023-43686

Medium severity, CVSS 6.2. EPSS: 0.1% chance of exploitation in the next 30 days.

An issue was discovered in Malwarebytes 4.x and 5.x (and Nebula 2020-10-21 and later). A large number of Firefox preference files can cause the parser to ignore other browser configuration files, leading to a denial of service.

Published 2026-06-09. Last modified 2026-07-23.