CVE-2026-4716
CRITICAL
mozilla
NVD
CVSS Score
9.1
Severity
CRITICAL
Published
Mar 24, 2026
Vendor
mozilla
Description
Incorrect boundary conditions, uninitialized memory in the JavaScript Engine component. This vulnerability affects Firefox < 149, Firefox ESR < 140.9, Thunderbird < 149, and Thunderbird < 140.9.