CVE-2025-10527

ALTO 7.1CVE-2025-10527 · Published 16/09/2025 · updated 23/10/2026

En resumen

CVE-2025-10527 es una vulnerabilidad ALTO (CVSS 7.1) que afecta a firefox (mozilla), thunderbird (mozilla).
Probabilidad de explotación en los próximos 30 días (EPSS): 0.29%, mayor que el 21.7% de las vulnerabilidades.
Solución: actualizar a 140.3.0, 143.0 o posterior.

Package	Affected versions	Patched versions
firefox mozilla	`≤ 143.0< 140.3.0`	`140.3.0`
thunderbird mozilla	`≥ 141.0, < 143.0< 140.3.0`	`143.0140.3.0`

Description

Sandbox escape due to use-after-free in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 143, Firefox ESR 140.3, Thunderbird 143, and Thunderbird 140.3.

References

bugzilla.mozilla.org/show_bug.cgi · Broken Link
mozilla.org/security/advisories/mfsa2025-73 · Vendor Advisory
mozilla.org/security/advisories/mfsa2025-75 · Vendor Advisory
mozilla.org/security/advisories/mfsa2025-77 · Vendor Advisory
mozilla.org/security/advisories/mfsa2025-78 · Vendor Advisory
lists.debian.org/debian-lts-announce/2025/09/msg00020.html
lists.debian.org/debian-lts-announce/2025/09/msg00026.html

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Package

Affected versions

Patched versions

firefox

mozilla

≤ 143.0< 140.3.0

140.3.0

thunderbird

mozilla

≥ 141.0, < 143.0< 140.3.0

143.0140.3.0

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