CVE-2026-0881criticalCWE-284 CWE-693

CVE-2026-0881: falha crítica em Mozilla Firefox

Sandbox escape in the Messaging System component

Publicada em 13 jan 2026 · Atualizada em 15 jul 2026

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28Vexday Risk Score

Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.

ssvc Trackcvss 10epss 0.3%

Sandbox escape in the Messaging System component. This vulnerability was fixed in Firefox 147 and Thunderbird 147.

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

Produtos afetados

Mozilla · Firefox Mozilla · Thunderbird

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Referências

https://access.redhat.com/security/cve/CVE-2026-0881 https://bugzilla.mozilla.org/show_bug.cgi?id=2005845 https://bugzilla.redhat.com/show_bug.cgi?id=2428970 https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-0881.json https://www.mozilla.org/security/advisories/mfsa2026-01/https://www.mozilla.org/security/advisories/mfsa2026-04/