CVE-2026-2447
Estado: ModificadaAlta (8.8)—
Heap buffer overflow in libvpx. This vulnerability was fixed in Firefox 147.0.4, Firefox ESR 140.7.1, Firefox ESR 115.32.1, Thunderbird 140.7.2, and Thunderbird 147.0.2.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Puntuación base: 8.8
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.64%
- Percentil entre todas las CVEs puntuadas: 49
- Fecha de la puntuación: 5/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
🎯 Técnicas ATT&CK
Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.
- Explotación
T1203Exploitation for Client Executionexecution95 % - Impacto principal
T1059Command and Scripting Interpreterexecution85 % - Impacto secundario
T1068Exploitation for Privilege Escalationprivilege escalation75 %
Vector CVSS con UI:R indica explotación en cliente (T1203). Heap buffer overflow en libvpx permite ejecución de código arbitrario (T1059) y potencial escalada de privilegios (T1068).
Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.
🛡️ Mitigaciones ATT&CK que cubren estas técnicas
Tecnologías afectadas (2)
CWE
- CWE-122
Referencias
- https://bugzilla.mozilla.org/show_bug.cgi?id=2014390
- https://www.mozilla.org/security/advisories/mfsa2026-10/
- https://www.mozilla.org/security/advisories/mfsa2026-11/
- https://lists.debian.org/debian-lts-announce/2026/02/msg00028.html
- https://access.redhat.com/errata/RHSA-2026:16174
- https://access.redhat.com/errata/RHSA-2026:3338
- https://access.redhat.com/errata/RHSA-2026:3339
- https://access.redhat.com/errata/RHSA-2026:3361
- https://access.redhat.com/errata/RHSA-2026:3491
- https://access.redhat.com/errata/RHSA-2026:3492
- https://access.redhat.com/errata/RHSA-2026:3493
- https://access.redhat.com/errata/RHSA-2026:3494
- https://access.redhat.com/errata/RHSA-2026:3495
- https://access.redhat.com/errata/RHSA-2026:3496
- https://access.redhat.com/errata/RHSA-2026:3497
- https://access.redhat.com/errata/RHSA-2026:3515
- https://access.redhat.com/errata/RHSA-2026:3516
- https://access.redhat.com/errata/RHSA-2026:3517
- https://access.redhat.com/errata/RHSA-2026:3967
- https://access.redhat.com/errata/RHSA-2026:3976
- https://access.redhat.com/errata/RHSA-2026:3978
- https://access.redhat.com/errata/RHSA-2026:3979
- https://access.redhat.com/errata/RHSA-2026:3980
- https://access.redhat.com/errata/RHSA-2026:3981
- https://access.redhat.com/errata/RHSA-2026:3982
- https://access.redhat.com/errata/RHSA-2026:3983
- https://access.redhat.com/errata/RHSA-2026:3984
- https://access.redhat.com/errata/RHSA-2026:4022
- https://access.redhat.com/errata/RHSA-2026:4152
- https://access.redhat.com/errata/RHSA-2026:4260
- https://access.redhat.com/errata/RHSA-2026:4432
- https://access.redhat.com/errata/RHSA-2026:4447
- https://access.redhat.com/errata/RHSA-2026:4629
- https://access.redhat.com/errata/RHSA-2026:5227
- https://access.redhat.com/errata/RHSA-2026:5228
- https://access.redhat.com/errata/RHSA-2026:5229
- https://access.redhat.com/errata/RHSA-2026:5230
- https://access.redhat.com/errata/RHSA-2026:5231
- https://access.redhat.com/errata/RHSA-2026:5319
- https://access.redhat.com/errata/RHSA-2026:5320
- https://access.redhat.com/errata/RHSA-2026:5323
- https://access.redhat.com/errata/RHSA-2026:5324
- https://access.redhat.com/errata/RHSA-2026:5326
- https://access.redhat.com/errata/RHSA-2026:8746
- https://access.redhat.com/errata/RHSA-2026:8747
- https://access.redhat.com/errata/RHSA-2026:8748
- https://access.redhat.com/security/cve/CVE-2026-2447
- https://bugzilla.redhat.com/show_bug.cgi?id=2440219
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-2447.json
JSON original (NVD)
Mostrar
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{
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"sourceIdentifier": "security@mozilla.org"
}