High severity7.8CISA KEVNVD Advisory· Published Oct 19, 2021· Updated Jun 17, 2026
CVE-2021-30807
CVE-2021-30807
Description
A memory corruption issue was addressed with improved memory handling. This issue is fixed in macOS Big Sur 11.5.1, iOS 14.7.1 and iPadOS 14.7.1, watchOS 7.6.1. An application may be able to execute arbitrary code with kernel privileges. Apple is aware of a report that this issue may have been actively exploited.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
9cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*range: <14.7.1
- (no CPE)range: = 14.7.1
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*range: <11.5.1
- (no CPE)range: = 11.5.1
- (no CPE)range: unspecified
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*range: <7.6.1
- (no CPE)range: = 7.6.1
- Range: = 14.7.1
Patches
Vulnerability mechanics
References
4- support.apple.com/en-us/HT212622nvdRelease NotesVendor Advisory
- support.apple.com/en-us/HT212623nvdRelease NotesVendor Advisory
- support.apple.com/en-us/HT212713nvdRelease NotesVendor Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalognvdThird Party AdvisoryUS Government Resource
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