CVE-2026-12329

medium

Description

Memory safety bug fixed in Thunderbird ESR 140.12. This vulnerability was fixed in Firefox ESR 140.12 and Thunderbird 140.12.

References

https://www.mozilla.org/security/advisories/mfsa2026-61/

https://www.mozilla.org/security/advisories/mfsa2026-58/

https://bugzilla.mozilla.org/show_bug.cgi?id=2044738

Details

Source: Mitre, NVD

Published: 2026-06-16

Updated: 2026-06-16

Risk Information

CVSS v2

Base Score: 7.6

Vector: CVSS2#AV:N/AC:H/Au:N/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 5.3

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Severity: Medium

EPSS

EPSS: 0.00251