NetSight
critical9.8

CVE-2026-16360

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 115.38, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.

Affected products

VendorProductAffected versions
MozillaFirefox
before 115.38.0
before 153.0.0
from 128.1.0 before 140.13.0
MozillaThunderbird
before 140.13.0
from 141.0 before 153.0

Weakness classification

References