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cve recordcritical

CVE-2026-75874

mozilla · firefox

Published
CVSS10
Severitycritical
WeaknessCWE-693
ExploitedNot in CISA KEV

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Description

Sandbox escape in the Remote Settings Client component. This vulnerability was fixed in Firefox 154, Thunderbird 154, Firefox ESR 115.40, Firefox ESR 140.15, Firefox ESR 153.2, Thunderbird 140.15, and Thunderbird 153.2.

References

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Our coverage of CVE-2026-75874

CVE-2026-19478high

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