CVE-2026-4711

CRÍTICO 9.8CVE-2026-4711 · Published 24/03/2026 · updated 17/06/2026

En resumen

CVE-2026-4711 es una vulnerabilidad CRÍTICO (CVSS 9.8) que afecta a firefox (mozilla).
Probabilidad de explotación en los próximos 30 días (EPSS): 0.41%, mayor que el 35.6% de las vulnerabilidades.
Solución: actualizar a 140.9.0, 149.0 o posterior.

Package	Affected versions	Patched versions
firefox mozilla	`< 140.9.0< 149.0`	`140.9.0149.0`

Description

Use-after-free in the Widget: Cocoa component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.

References

bugzilla.mozilla.org/show_bug.cgi · Permissions Required
mozilla.org/security/advisories/mfsa2026-20 · Vendor Advisory
mozilla.org/security/advisories/mfsa2026-22 · Vendor Advisory
mozilla.org/security/advisories/mfsa2026-23
mozilla.org/security/advisories/mfsa2026-24

Más vulnerabilidades de firefox

Ver todo →

Running one of these products? Scan your site to see whether it exposes a vulnerable version.

Scan my site free

Package

Affected versions

Patched versions

firefox

mozilla

< 140.9.0< 149.0

140.9.0149.0

Más vulnerabilidades de firefox

Ver todo →