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

CVE-2021-1816

CVE-2021-1816

Description

A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 14.5 and iPadOS 14.5, watchOS 7.4, tvOS 14.5. 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

11
  • Apple Inc./iOSllm-fuzzy
    Range: = 14.5
  • Apple Inc./Ipadosllm-fuzzy2 versions
    = 14.5+ 1 more
    • (no CPE)range: = 14.5
    • cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*range: <14.5
  • Apple Inc./watchOSllm-fuzzy3 versions
    = 7.4+ 2 more
    • (no CPE)range: = 7.4
    • (no CPE)range: unspecified
    • cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*range: <7.4
  • Apple Inc./tvOSllm-fuzzy3 versions
    = 14.5+ 2 more
    • (no CPE)range: = 14.5
    • (no CPE)range: unspecified
    • cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*range: <14.5
  • Apple Inc./iOS and iPadOScpe-rescue
    Range: unspecified
  • Apple Inc./Iphone OS
    cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
    Range: <14.5

Patches

Vulnerability mechanics

References

3

News mentions

0

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