CVE-2025-10527

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.

CVSS v3 7.1 HIGH

7.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 3.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope CHANGED

References

Link	Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=1984825	Broken Link
https://www.mozilla.org/security/advisories/mfsa2025-73/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-75/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-77/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-78/	Vendor Advisory
https://lists.debian.org/debian-lts-announce/2025/09/msg00020.html
https://lists.debian.org/debian-lts-announce/2025/09/msg00026.html

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:mozilla:firefox:::::esr:::*
	cpe:2.3:a:mozilla:firefox:::::-:::*
	cpe:2.3:a:mozilla:thunderbird::::::::
	cpe:2.3:a:mozilla:thunderbird::::::::

History

23 Oct 2026, 22:10

Type	Values Removed	Values Added
Summary	(es) Escape de sandbox debido a uso después de liberación en el componente Graphics: Canvas2D. Esta vulnerabilidad afecta a Firefox < 143, Firefox ESR < 140.3, Thunderbird < 143, y Thunderbird < 140.3.	(es) Escape de sandbox debido a uso después de liberación en el componente Graphics: Canvas2D. Esta vulnerabilidad afecta a Firefox < 143, Firefox ESR anterior a 140.3, Thunderbird < 143, y Thunderbird anterior a 140.3.

18 Oct 2026, 21:10

Type	Values Removed	Values Added
Summary		(es) Escape de sandbox debido a uso después de liberación en el componente Graphics: Canvas2D. Esta vulnerabilidad afecta a Firefox < 143, Firefox ESR < 140.3, Thunderbird < 143, y Thunderbird < 140.3.

Information

Published : 2025-09-16 13:15

Updated : 2026-10-23 22:10

NVD link : CVE-2025-10527

Mitre link : CVE-2025-10527

CVE.ORG link : CVE-2025-10527

JSON object : View

Products Affected

mozilla

firefox
thunderbird

CWE

CWE-416

Use After Free

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