CVE-2026-16392

CVE-2026-16392: JIT miscompilation in the JavaScript Engine: JIT component

Published July 21, 2026
Last update July 28, 2026
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CVSS base score

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What the vulnerability does

01Description

JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.

Key dates

02Disclosure timeline

July 21, 2026 CVE published
July 28, 2026 Record updated