Description

Memory safety bugs present in Firefox ESR 140.6, Thunderbird ESR 140.6, Firefox 146 and Thunderbird 146. 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 affects Firefox < 147 and Firefox ESR < 140.7.

INFO

Published Date :

2026-01-13T13:30:59.454Z

Last Modified :

2026-01-13T13:30:59.454Z

Source :

mozilla
AFFECTED PRODUCTS

The following products are affected by CVE-2026-0891 vulnerability.

No data.

CVSS Vulnerability Scoring System