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High severity7.8NVD Advisory· Published Apr 2, 2021· Updated Jun 17, 2026

CVE-2021-1805

CVE-2021-1805

Description

An out-of-bounds write was addressed with improved input validation. This issue is fixed in macOS Big Sur 11.2.1, macOS Catalina 10.15.7 Supplemental Update, macOS Mojave 10.14.6 Security Update 2021-002. An 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

23
  • Apple Inc./Mac OS X18 versions
    cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*+ 17 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_2019-001:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-002:*:*:*:*:*:*
    • 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:security_update_2021-001:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2021-002:*:*:*:*:*:*
    • 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:security_update_2020-001:*:*:*:*:*:*
    • 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,<11.2
    • (no CPE)range: unspecified
  • Apple Inc./macOS Mojavellm-fuzzy
    Range: = 10.14.6 Security Update 2021-002
  • Apple Inc./macOS Catalinallm-fuzzy
    Range: = 10.15.7 Supplemental Update
  • Apple Inc./macOS Big Surllm-fuzzy
    Range: = 11.2.1

Patches

Vulnerability mechanics

References

3

News mentions

0

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