PT-2026-84179 · Mozilla · Firefox+1

CVE-2026-84126

Published

2026-09-01

Updated

2026-09-04

CVSS v3.1

4.3

Medium

Vector

AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 155 Thunderbird versions prior to 155

Description Incorrect boundary conditions exist within the Layout: Grid component.

Recommendations Update Firefox to version 155. Update Thunderbird to version 155.

Fix

Buffer Overflow

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CVE-2026-84126

OPENSUSE-SU-2026:11677-1

Firefox

Thunderbird