Medium severity6.5NVD Advisory· Published Dec 22, 2022· Updated Jun 17, 2026
CVE-2021-4128
CVE-2021-4128
Description
When transitioning in and out of fullscreen mode, a graphics object was not correctly protected; resulting in memory corruption and a potentially exploitable crash.*This bug only affects Firefox on MacOS. Other operating systems are unaffected.*. This vulnerability affects Firefox < 95.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3unspecified+ 2 more
- (no CPE)range: unspecified
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*range: <95.0
- (no CPE)range: <95
Patches
Vulnerability mechanics
References
2- bugzilla.mozilla.org/show_bug.cginvdExploitIssue TrackingPatchVendor Advisory
- www.mozilla.org/security/advisories/mfsa2021-52/nvdVendor Advisory
News mentions
0No linked articles in our index yet.