CVE-2024-3854

HIGH 8.8CVE-2024-3854 · Published 16/04/2024 · updated 17/06/2026

In short

CVE-2024-3854 is a HIGH (CVSS 8.8) vulnerability affecting firefox (mozilla), thunderbird (mozilla).
Chance of exploitation in the next 30 days (EPSS): 0.73%, higher than 54.5% of all vulnerabilities.
Fix: update to 115.10, 125.0 or later.

Package	Affected versions	Patched versions
firefox mozilla	`< 115.10< 125.0`	`115.10125.0`
thunderbird mozilla	`< 115.10`	`115.10`

Description

In some code patterns the JIT incorrectly optimized switch statements and generated code with out-of-bounds-reads. This vulnerability affects Firefox < 125, Firefox ESR < 115.10, and Thunderbird < 115.10.

References

bugzilla.mozilla.org/show_bug.cgi · Issue Tracking
lists.debian.org/debian-lts-announce/2024/04/msg00012.html · Mailing List
lists.debian.org/debian-lts-announce/2024/04/msg00013.html · Mailing List
mozilla.org/security/advisories/mfsa2024-18 · Vendor Advisory
mozilla.org/security/advisories/mfsa2024-19 · Vendor Advisory
mozilla.org/security/advisories/mfsa2024-20 · Vendor Advisory

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Package

Affected versions

Patched versions

firefox

mozilla

< 115.10< 125.0

115.10125.0

thunderbird

mozilla

< 115.10

115.10

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