cvedb.io
CVE-2021-4128
MEDIUM · CVSS 6.5
EPSS exploitation probability: 0%
Published 2022-12-22T20:15:11.937 · Last modified 2026-06-17T04:19:05.007

Summary

When transitioning in and out of fullscreen mode, a graphics object was not correctly protected; resulting in memory corruption and a potentially exploitable crash.<br>*This bug only affects Firefox on MacOS. Other operating systems are unaffected.*. This vulnerability affects Firefox < 95.

Affected products

mozilla — firefox

Does this affect you?

Add your gear to cvedb and we'll alert you only when mozilla ships something exploited.

Check my exposure →

References

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