CVE-2026-4715

CRÍTICO 9.1CVE-2026-4715 · Published 24/03/2026 · updated 17/06/2026

En resumen

CVE-2026-4715 es una vulnerabilidad CRÍTICO (CVSS 9.1) que afecta a firefox (mozilla).
Probabilidad de explotación en los próximos 30 días (EPSS): 0.45%, mayor que el 38.9% 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

Uninitialized memory in the Graphics: Canvas2D 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

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Package

Affected versions

Patched versions

firefox

mozilla

< 140.9.0< 149.0

140.9.0149.0

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