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

CVE-2021-30743

CVE-2021-30743

Description

An out-of-bounds write was addressed with improved input validation. This issue is fixed in iOS 14.5 and iPadOS 14.5, watchOS 7.4, Security Update 2021-003 Catalina, tvOS 14.5, macOS Big Sur 11.3. Processing a maliciously crafted image may lead to arbitrary code execution.

AI Insight

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

Affected products

30
  • Apple Inc./Ipados2 versions
    cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*range: <14.5
    • (no CPE)range: 14.5
  • Apple Inc./Iphone OS
    cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
    Range: <14.5
  • Apple Inc./Mac OS X18 versions
    cpe:2.3:o:apple:mac_os_x:10.15:*:*:*:*:*:*:*+ 17 more
    • cpe:2.3:o:apple:mac_os_x:10.15:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.15.1:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.15.2:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.15.3:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.15.4:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.15.5:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.15.6:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.15.6:-:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.15.6:supplemental_update:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.15.7:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.15.7:-:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-001:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-005:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-007:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-001:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-002:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.15.7:supplemental_update:*:*:*:*:*:*
  • Apple Inc./macOS2 versions
    cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*range: >=11.0.1,<11.3
    • (no CPE)range: unspecified
  • Apple Inc./tvOS2 versions
    cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*range: <14.5
    • (no CPE)range: unspecified
  • Apple Inc./watchOS2 versions
    cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*range: <7.4
    • (no CPE)range: unspecified
  • Apple Inc./iOS and iPadOScpe-rescue
    Range: unspecified
  • Apple Inc./iOSllm-fuzzy
    Range: 14.5
  • Apple Inc./macOS Big Surllm-fuzzy
    Range: 11.3

Patches

Vulnerability mechanics

References

5

News mentions

0

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