High severity7.8NVD Advisory· Published Oct 19, 2021· Updated Jun 17, 2026

CVE-2021-30830

Description

A memory corruption issue was addressed with improved memory handling. This issue is fixed in Security Update 2021-005 Catalina, macOS Big Sur 11.6. A malicious application may be able to execute arbitrary code with kernel privileges.

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LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Apple Inc./macOS Catalinallm-fuzzy
Apple Inc./macOS Big Surllm-fuzzy
Range: <11.6
Apple Inc./macOSv5
Range: unspecified

Patches

Vulnerability mechanics

References

support.apple.com/en-us/HT212804nvdRelease NotesVendor Advisory
support.apple.com/en-us/HT212805nvdRelease NotesVendor Advisory

News mentions

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