CVE-2026-4684

ALTO 7.5CVE-2026-4684 · Published 24/03/2026 · updated 15/07/2026

Em resumo

CVE-2026-4684 é uma vulnerabilidade ALTO (CVSS 7.5) que afeta firefox (mozilla).
Chance de exploração nos próximos 30 dias (EPSS): 0.37%, maior que 30.6% das vulnerabilidades.
Correção: atualize para 140.9.0, 115.34.0, 149.0 ou posterior.

Package	Affected versions	Patched versions
firefox mozilla	`≥ 128.0, < 140.9.0< 115.34.0< 149.0`	`140.9.0115.34.0149.0`

Description

Race condition, use-after-free in the Graphics: WebRender component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.

References

bugzilla.mozilla.org/show_bug.cgi · Permissions Required
mozilla.org/security/advisories/mfsa2026-20 · Vendor Advisory
mozilla.org/security/advisories/mfsa2026-21 · Vendor Advisory
mozilla.org/security/advisories/mfsa2026-22 · Vendor Advisory
mozilla.org/security/advisories/mfsa2026-23
mozilla.org/security/advisories/mfsa2026-24
access.redhat.com/errata/RHSA-2026:5930
access.redhat.com/errata/RHSA-2026:5931
access.redhat.com/errata/RHSA-2026:5932
access.redhat.com/errata/RHSA-2026:6188
access.redhat.com/errata/RHSA-2026:6342
access.redhat.com/errata/RHSA-2026:6917
access.redhat.com/errata/RHSA-2026:7837

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