CVE-2026-100801

A privilege escalation vulnerability in the DLL Services component of Firefox could allow attackers to gain elevated permissions on affected systems. This high-severity flaw, rated 8.8 on the CVSS scale, necessitates immediate attention from organizations using Firefox, particularly those operating in sensitive environments or handling critical data. Users should ensure they are running the patched versions: Firefox ESR 153.4, Firefox 157, or Firefox ESR 140.17 to mitigate the risk.