High severity7.8NVD Advisory· Published Sep 8, 2021· Updated Jun 17, 2026
CVE-2021-30683
CVE-2021-30683
Description
A use after free issue was addressed with improved memory management. This issue is fixed in macOS Big Sur 11.4, Security Update 2021-003 Catalina, Security Update 2021-004 Mojave. A malicious application could execute arbitrary code leading to compromise of user information.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2< 11.4 (Big Sur); < Security Update 2021-003 Catalina; < Security Update 2021-004 Mojave+ 1 more
- (no CPE)range: < 11.4 (Big Sur); < Security Update 2021-003 Catalina; < Security Update 2021-004 Mojave
- (no CPE)range: unspecified
Patches
Vulnerability mechanics
References
3- support.apple.com/en-us/HT212529nvdRelease NotesVendor Advisory
- support.apple.com/en-us/HT212530nvdRelease NotesVendor Advisory
- support.apple.com/en-us/HT212531nvdRelease NotesVendor Advisory
News mentions
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