CVE-2026-124926

HIGH 8.8

Incorrect boundary conditions in the WebRTC component

CVSS Score

8.8

EPSS Score

0.0%

EPSS Percentile

0th

Incorrect boundary conditions in the WebRTC component. This vulnerability was fixed in Firefox 160, Firefox ESR 153.7, Thunderbird 160, and Thunderbird 153.7.

Vendor	mozilla
Product	firefox
Ecosystems	Browser JavaScript
Industries	Technology
Published	Nov 10, 2026
Last Updated	Nov 10, 2026

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Affected Versions

Mozilla / Firefox

All versions affected

Mozilla / Thunderbird

All versions affected

References

NVD ↗ CVE.org ↗ EPSS Data ↗

bugzilla.mozilla.org: https://bugzilla.mozilla.org/show_bug.cgi?id=2077727 mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-125/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-127/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-128/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-129/

Credits

Mozilla