CVE Watch19 oct 2026

CVE-2026-109720

JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158

CVSS

7.1

Alto

EPSS

0.3%

p17

KEV

—

Exploit Today

0-100

Publicado: 13 oct 2026 · Última mod.: 19 oct 2026 · CWE-843

EPSS · 30d

0.2%EPSS · 30 días0.3%

2026-10-142026-10-23

Descripción técnica

JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.

Referencias oficiales

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