CVE-2026-8949

Description

Integer overflow in the Widget: Win32 component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.

PUBLISHED Reserved 2026-05-19 | Published 2026-05-19 | Updated 2026-05-19 | Assigner mozilla

Product status

Credits

q1

References

bugzilla.mozilla.org/show_bug.cgi?id=1355639

www.mozilla.org/security/advisories/mfsa2026-46/

www.mozilla.org/security/advisories/mfsa2026-48/

www.mozilla.org/security/advisories/mfsa2026-50/

www.mozilla.org/security/advisories/mfsa2026-51/

cve.org (CVE-2026-8949)

nvd.nist.gov (CVE-2026-8949)

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