CVE-2026-74976mediumCWE-843

CVE-2026-74976: medium-severity vulnerability in Mozilla Firefox

JIT miscompilation in the JavaScript Engine: JIT component

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13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 6.5epss 0.4%
JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Affected products
Mozilla · FirefoxMozilla · Thunderbird
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