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

Fri, 01 May 2026 18:00:00 +0000

Type Values Removed Values Added
First Time appeared Mozilla thunderbird
CPEs cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*
Vendors & Products Mozilla thunderbird

Thu, 30 Apr 2026 18:00:00 +0000

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

Wed, 29 Apr 2026 06:00:00 +0000

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

Tue, 28 Apr 2026 15:45:00 +0000

Type Values Removed Values Added
First Time appeared Mozilla
Mozilla firefox
Vendors & Products Mozilla
Mozilla firefox

Tue, 28 Apr 2026 15:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-120
Metrics cvssV3_1

{'score': 9.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 28 Apr 2026 14:30:00 +0000

Type Values Removed Values Added
Description Sandbox escape due to incorrect boundary conditions in the WebRTC: Networking component. This vulnerability was fixed in Firefox ESR 140.10.1.
Title Sandbox escape due to incorrect boundary conditions in the WebRTC: Networking component
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published: 2026-04-28T13:49:12.432Z

Updated: 2026-04-30T17:19:49.963Z

Reserved: 2026-04-28T13:42:16.846Z

Link: CVE-2026-7321

cve-icon Vulnrichment

Updated: 2026-04-28T14:48:26.139Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-28T15:16:37.550

Modified: 2026-05-01T17:54:04.827

Link: CVE-2026-7321

cve-icon Redhat

No data.