CVE-2026-4716

Incorrect boundary conditions, uninitialized memory in the JavaScript Engine component

CVSS 9.1 CRITICALEPSS 0.4%CWE-908

Vexday Risk Score

28Bajo

Decisión SSVC (CISA)

Track

Sin señal de explotación → monitorear

CVSS 9.1EPSS 0.4%KEV nãoPoC —Nuclei —Metasploit —Patch —

Ciclo de vida

24 mar 2026Publicada en NVD

Recomendación: Monitorear — sin señal de explotación por ahora.

Incorrect boundary conditions, uninitialized memory in the JavaScript Engine component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.

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

Productos afectados

Mozilla · Firefox Mozilla · Thunderbird

¿Quieres saber si tu infraestructura está expuesta a esto?

Hablar con TrueHacking →

Referencias

https://bugzilla.mozilla.org/show_bug.cgi?id=2018592 https://www.mozilla.org/security/advisories/mfsa2026-20/https://www.mozilla.org/security/advisories/mfsa2026-22/https://www.mozilla.org/security/advisories/mfsa2026-23/https://www.mozilla.org/security/advisories/mfsa2026-24/