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Description

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

PUBLISHED Reserved 2026-06-15 | Published 2026-06-16 | Updated 2026-06-16 | Assigner mozilla

Product status

140.12 (rpm)
unaffected

140.12 (rpm)
unaffected

Credits

Michael Froman

References

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

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

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

cve.org (CVE-2026-12329)

nvd.nist.gov (CVE-2026-12329)

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