Incorrect boundary conditions in the Layout: Grid component. This vulnerability was fixed in Firefox 155 and Thunderbird 155.

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Fixes

Solution

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Workaround

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History

Thu, 03 Sep 2026 13:15:00 +0000

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

Wed, 02 Sep 2026 04:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-119

Tue, 01 Sep 2026 22:00:00 +0000

Type Values Removed Values Added
Description Incorrect boundary conditions in the Layout: Grid component. This vulnerability was fixed in Firefox 155. Incorrect boundary conditions in the Layout: Grid component. This vulnerability was fixed in Firefox 155 and Thunderbird 155.
References
Metrics ssvc

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


Tue, 01 Sep 2026 15:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-120
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N'}


Tue, 01 Sep 2026 15:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-119

Tue, 01 Sep 2026 14:45:00 +0000

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

Tue, 01 Sep 2026 12:45:00 +0000

Type Values Removed Values Added
Description Incorrect boundary conditions in the Layout: Grid component. This vulnerability was fixed in Firefox 155.
Title Incorrect boundary conditions in the Layout: Grid component
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2026-09-01T21:32:57.482Z

Reserved: 2026-09-01T07:25:23.294Z

Link: CVE-2026-84126

cve-icon Vulnrichment

Updated: 2026-09-01T15:00:16.774Z

cve-icon NVD

Status : Analyzed

Published: 2026-09-01T13:20:06.537

Modified: 2026-09-03T13:04:01.190

Link: CVE-2026-84126

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-02T05:45:04Z

Weaknesses