PT-2026-126462

CVE-2026-117879

Published

2026-10-27

Updated

2026-11-09

Description by

CVSS 3.1

7.3

High

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

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 159 Firefox ESR versions prior to 115.44 Firefox ESR versions prior to 153.6 Thunderbird versions prior to 159 Thunderbird versions prior to 153.6

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

Recommendations Update Firefox to version 159. Update Firefox ESR to version 115.44. Update Firefox ESR to version 153.6. Update Thunderbird to version 159. Update Thunderbird to version 153.6.

Exploitability

Fix

Impacts

Researchers

Amy Burnett

Vendors

Affected products

Weakness enumeration

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer

Related identifiers

CVE-2026-117879

OPENSUSE-SU-2026:12319-1