CVE-2026-2793

Published: Feb 24, 2026Modified: Apr 13, 2026

9.8

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitability: 3.9 / Impact: 5.9

Source: NVD

Description

Memory safety bugs present in Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

Affected (5)

Products: Mozilla: Firefox, Thunderbird

Mozilla

2 products

Firefox

Thunderbird

Configuration A

5 vulnerable

Vulnerable Software	Affected Versions
Mozilla Firefox	Before 148.0
Mozilla Firefox	Before 115.33.0
Mozilla Firefox	From 128.0 to 140.8.0
Mozilla Thunderbird	Before 148.0
Mozilla Thunderbird	Before 140.8.0