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CVE-2026-4715

CRITICAL CVSS: 9.1 Published: 2026-03-24 Modified: 2026-06-17

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.

Affected Platforms

Mozilla Firefox

Weakness Type

CWE-908, CWE-908

References