cvedb.io
CVE-2021-43534
HIGH · CVSS 8.8
EPSS exploitation probability: 0%
Published 2021-12-08T22:15:09.467 · Last modified 2026-06-17T04:11:05.053

Summary

Mozilla developers and community members reported memory safety bugs present in Firefox 93 and Firefox ESR 91.2. 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 affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.

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.