CVE-2026-12329

Memory safety bug fixed in Thunderbird ESR 140.12

CVSS 5.3 MEDIUMEPSS 0.3%CWE-119 CWE-416 CWE-476

Vexday Risk Score

13Bajo

Decisión SSVC (CISA)

Track

Sin señal de explotación → monitorear

CVSS 5.3EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Ciclo de vida

16 jun 2026Publicada en NVD

Recomendación: Monitorear — sin señal de explotación por ahora.

Memory safety bug fixed in Thunderbird ESR 140.12. This vulnerability was fixed in Firefox ESR 140.12 and Thunderbird 140.12.

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

Productos afectados

Mozilla · Firefox Mozilla · Thunderbird

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Referencias

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-2026-12329 https://bugzilla.mozilla.org/show_bug.cgi?id=2044738 https://bugzilla.redhat.com/show_bug.cgi?id=2489214 https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-12329.json https://www.mozilla.org/security/advisories/mfsa2026-58/https://www.mozilla.org/security/advisories/mfsa2026-61/