🔐 CVE Alert

CVE-2026-92021

UNKNOWN 0.0

Use-after-free in the JavaScript Engine: JIT component

CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th

Use-after-free in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox ESR 140.16 and Thunderbird 140.16.

Vendor mozilla
Product firefox
Ecosystems
Industries
Technology
Published Sep 15, 2026
Last Updated Sep 15, 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=2067208 mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-92/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-95/

Credits

Tomer Fichman