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Medium severity5.5NVD Advisory· Published Apr 2, 2021· Updated Jun 17, 2026

CVE-2021-1791

CVE-2021-1791

Description

An out-of-bounds read issue existed that led to the disclosure of kernel memory. This was addressed with improved input validation. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, watchOS 7.3, tvOS 14.4, iOS 14.4 and iPadOS 14.4. A malicious application may be able to disclose kernel memory.

AI Insight

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

Affected products

27
  • Apple Inc./Ipados
    cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
    Range: <14.4
  • Apple Inc./Iphone OS
    cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
    Range: <14.4
  • Apple Inc./Mac OS X17 versions
    cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*+ 16 more
    • cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*range: >=10.14,<10.14.6
    • cpe:2.3:o:apple:mac_os_x:10.14.6:-:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-004:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-005:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-006:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-007:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-001:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-002:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-003:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-004:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-005:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-006:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-007:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.14.6:supplemental_update:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.14.6:supplemental_update_2:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.15.7:-:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.15.7:supplemental_update:*:*:*:*:*:*
  • Apple Inc./macOS3 versions
    cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*+ 2 more
    • cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*range: >=11.0,<11.2
    • (no CPE)range: = 11.2
    • (no CPE)range: unspecified
  • Apple Inc./tvOS
    cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
    Range: <14.4
  • Apple Inc./watchOS2 versions
    cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*range: <7.3
    • (no CPE)range: = 7.3
  • Apple Inc./iOSllm-fuzzy
    Range: = 14.4
  • Apple Inc./iOS and iPadOScpe-rescue
    Range: unspecified

Patches

Vulnerability mechanics

References

4

News mentions

0

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