DevSecOps Toolkit

CVE record

CVE-2026-8974

HIGHCVSS 8.8

Memory safety bugs present in Thunderbird 140.10 and Thunderbird 150. 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 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.

Vulnerability metadata

Published
2026-05-19T08:46:53.977Z
Modified
2026-05-20T12:43:14.840Z
EPSS
Not available
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References