Security Advisory

CVE-2026-74989

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-08-18 12:23:41

Last updated 2026-08-18 18:55:48

Assigner mozilla

CVSS score not scored

State PUBLISHED

Description

Internally found bugs present in Thunderbird 153. Some of these bugs showed evidence of memory corruption or another security-relevant defect and we presume that with enough effort some of these could have been exploited. This vulnerability was fixed in Firefox 154 and Thunderbird 154.

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