CVE-2026-100784

ALTO 8.8CVE-2026-100784 · Published 29/09/2026 · updated 05/10/2026

Em resumo

CVE-2026-100784 é uma vulnerabilidade ALTO (CVSS 8.8) que afeta firefox (mozilla), thunderbird (mozilla).
Chance de exploração nos próximos 30 dias (EPSS): 0.33%, maior que 25.7% das vulnerabilidades.
Correção: atualize para 140.17.0, 153.4.0, 157.0.0, 115.42.0 ou posterior.

Package	Affected versions	Patched versions
firefox mozilla	`≥ 116.0, < 140.17.0≥ 141.0, < 153.4.0≥ 154.0.0, < 157.0.0< 115.42.0`	`140.17.0153.4.0157.0.0115.42.0`
thunderbird mozilla	`≥ 141.0, < 153.4.0≥ 154.0, < 157.0< 140.17.0`	`153.4.0157.0140.17.0`

Description

Use-after-free in the Layout: Text and Fonts component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.

References

bugzilla.mozilla.org/show_bug.cgi · Permissions Required
mozilla.org/security/advisories/mfsa2026-100 · Vendor Advisory
mozilla.org/security/advisories/mfsa2026-101 · Vendor Advisory
mozilla.org/security/advisories/mfsa2026-102 · Vendor Advisory
mozilla.org/security/advisories/mfsa2026-103 · Vendor Advisory
mozilla.org/security/advisories/mfsa2026-97 · Vendor Advisory
mozilla.org/security/advisories/mfsa2026-98 · Vendor Advisory
mozilla.org/security/advisories/mfsa2026-99 · Vendor Advisory

Mais vulnerabilidades de firefox

Ver tudo →

Running one of these products? Scan your site to see whether it exposes a vulnerable version.

Scan my site free

Package

Affected versions

Patched versions

firefox

mozilla

≥ 116.0, < 140.17.0≥ 141.0, < 153.4.0≥ 154.0.0, < 157.0.0< 115.42.0

140.17.0153.4.0157.0.0115.42.0

thunderbird

mozilla

≥ 141.0, < 153.4.0≥ 154.0, < 157.0< 140.17.0

153.4.0157.0140.17.0

Mais vulnerabilidades de firefox

Ver tudo →