cvedb.io
CVE-2021-43533
MEDIUM · CVSS 4.3
EPSS exploitation probability: 0%
Published 2021-12-08T22:15:09.420 · Last modified 2026-06-17T04:11:04.960

Summary

When parsing internationalized domain names, high bits of the characters in the URLs were sometimes stripped, resulting in inconsistencies that could lead to user confusion or attacks such as phishing. This vulnerability affects Firefox < 94.

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.