PT-2026-61904
CVE-2026-16392
·
Published
2026-07-21
·
Updated
2026-09-18
Description by
CVSS 3.1
9.1
CriticalMetricsAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Name of the Vulnerable Software and Affected Versions
Firefox versions prior to 153
Thunderbird versions prior to 153
Description
A JIT miscompilation issue exists within the JIT component of the JavaScript Engine. JIT (Just-In-Time) compilation is a method used by the engine to improve performance by compiling code during execution rather than before.
Recommendations
Update Firefox to version 153.
Update Thunderbird to version 153.
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