CVE-2026-12297

Sandbox escape due to incorrect boundary conditions in the Networking component

CVSS 9.6 CRITICALEPSS 0.4%CWE-119 CWE-653

Vexday Risk Score

28Baixo

Decisão SSVC (CISA)

Track

Sem sinal de exploração → monitorar

CVSS 9.6EPSS 0.4%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Ciclo de vida

16 jun 2026Publicada no NVD

Recomendação: Monitorar — sem sinal de exploração no momento.

Sandbox escape due to incorrect boundary conditions in the Networking component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.

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

Produtos afetados

Mozilla · Firefox Mozilla · Thunderbird

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Referências

https://access.redhat.com/errata/RHSA-2026:27717 https://access.redhat.com/errata/RHSA-2026:27733 https://access.redhat.com/errata/RHSA-2026:27734 https://access.redhat.com/errata/RHSA-2026:29940 https://access.redhat.com/errata/RHSA-2026:30846 https://access.redhat.com/errata/RHSA-2026:33445 https://access.redhat.com/security/cve/CVE-2026-12297 https://bugzilla.mozilla.org/show_bug.cgi?id=2041610 https://bugzilla.redhat.com/show_bug.cgi?id=2489235 https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-12297.json https://www.mozilla.org/security/advisories/mfsa2026-57/https://www.mozilla.org/security/advisories/mfsa2026-58/