cvedb.io
CVE-2026-4729
CRITICAL · CVSS 9.8
EPSS exploitation probability: 0%
Published 2026-03-24T13:16:08.830 · Last modified 2026-06-30T03:20:41.240

Summary

Memory safety bugs present in Firefox 148 and Thunderbird 148. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 149 and Thunderbird 149.

Affected products

mozilla — firefox

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.