High severity8.8NVD Advisory· Published Sep 8, 2021· Updated Jun 17, 2026

CVE-2021-1867

Description

An out-of-bounds read was addressed with improved input validation. This issue is fixed in iOS 14.5 and iPadOS 14.5, macOS Big Sur 11.3. A malicious application may be able to execute arbitrary code with kernel privileges.

AI Insight

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

Affected products

Apple Inc./macOS Big Surllm-fuzzy
Range: 11.3
Apple Inc./Ipadosllm-fuzzy
Range: 14.5
Apple Inc./iOSllm-fuzzy
Range: 14.5
Apple Inc./macOSv5
Range: unspecified
Apple Inc./iOS and iPadOScpe-rescue
Range: unspecified

Patches

Vulnerability mechanics

References

support.apple.com/en-us/HT212317nvdVendor Advisory
support.apple.com/en-us/HT212325nvdVendor Advisory

News mentions

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