NetSight
critical9.8

CVE-2026-16412

Memory safety bugs present in Thunderbird ESR 140.12 and Thunderbird 152.

Impact

Memory safety bugs present in Thunderbird ESR 140.12 and Thunderbird 152. 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 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.

Affected products

VendorProductAffected versions
MozillaFirefox
before 153.0.0
from 140.1.0 before 140.13.0

Weakness classification

References