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CVE-2026-7321

CRITICAL CVSS: 9.6 Published: 2026-04-28 Modified: 2026-06-17

Description

Sandbox escape due to incorrect boundary conditions in the WebRTC: Networking component. This vulnerability was fixed in Firefox 150, Thunderbird 150, Firefox ESR 140.10.1, and Thunderbird 140.10.1.

Affected Platforms

Mozilla FirefoxMozilla Thunderbird

Weakness Type

CWE-120

References