CVE-2026-7321

Description

Sandbox escape due to incorrect boundary conditions in the WebRTC: Networking component. This vulnerability was fixed in Firefox 150, Thunderbird 150, Firefox ESR 140.10.1, and Thunderbird 140.10.1.

PUBLISHED Reserved 2026-04-28 | Published 2026-04-28 | Updated 2026-04-30 | Assigner mozilla

Product status

Credits

The Mozilla Fuzzing Team

References

bugzilla.mozilla.org/show_bug.cgi?id=2029461

www.mozilla.org/security/advisories/mfsa2026-30/

www.mozilla.org/security/advisories/mfsa2026-33/

www.mozilla.org/security/advisories/mfsa2026-36/

www.mozilla.org/security/advisories/mfsa2026-39/

cve.org (CVE-2026-7321)

nvd.nist.gov (CVE-2026-7321)

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