High severity7.8NVD Advisory· Published Oct 19, 2021· Updated Jun 17, 2026
CVE-2021-30843
CVE-2021-30843
Description
This issue was addressed with improved checks. This issue is fixed in iOS 14.8 and iPadOS 14.8, macOS Big Sur 11.6, Security Update 2021-005 Catalina, tvOS 15, iOS 15 and iPadOS 15, watchOS 8. Processing a maliciously crafted dfont file may lead to arbitrary code execution.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
4Big Sur 11.6, Security Update 2021-005 Catalina+ 1 more
- (no CPE)range: Big Sur 11.6, Security Update 2021-005 Catalina
- (no CPE)range: unspecified
- Range: 14.8, 15
- Range: 14.8, 15
Patches
Vulnerability mechanics
References
9- seclists.org/fulldisclosure/2021/Oct/61nvdMailing ListRelease NotesThird Party Advisory
- seclists.org/fulldisclosure/2021/Oct/62nvdMailing ListRelease NotesThird Party Advisory
- seclists.org/fulldisclosure/2021/Oct/63nvdMailing ListRelease NotesThird Party Advisory
- support.apple.com/en-us/HT212804nvdRelease NotesVendor Advisory
- support.apple.com/en-us/HT212805nvdRelease NotesVendor Advisory
- support.apple.com/en-us/HT212807nvdRelease NotesVendor Advisory
- support.apple.com/en-us/HT212814nvdRelease NotesVendor Advisory
- support.apple.com/en-us/HT212815nvdRelease NotesVendor Advisory
- support.apple.com/en-us/HT212819nvdRelease NotesVendor Advisory
News mentions
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