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Medium severity6.5NVD Advisory· Published Oct 28, 2021· Updated Jun 17, 2026

CVE-2021-1821

CVE-2021-1821

Description

A logic issue was addressed with improved state management. This issue is fixed in watchOS 7.6, macOS Big Sur 11.5. Visiting a maliciously crafted webpage may lead to a system denial of service.

AI Insight

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

Affected products

5
  • Apple Inc./macOS2 versions
    cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*range: <11.5
    • (no CPE)range: unspecified
  • Apple Inc./watchOS2 versions
    cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*range: <7.6
    • (no CPE)range: = 7.6
  • Apple Inc./macOS Big Surllm-fuzzy
    Range: = 11.5

Patches

Vulnerability mechanics

References

2

News mentions

0

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