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High severity7.8NVD Advisory· Published Aug 24, 2021· Updated Jun 17, 2026

CVE-2021-30981

CVE-2021-30981

Description

A buffer overflow was addressed with improved bounds checking. This issue is fixed in macOS Monterey 12.1, Security Update 2021-008 Catalina, macOS Big Sur 11.6.2. 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

16
  • Apple Inc./macOSv52 versions
    unspecified+ 1 more
    • (no CPE)range: unspecified
    • cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*range: >=11.0,<11.6.2
  • Apple Inc./Mac OS X11 versions
    cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*+ 10 more
    • cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*range: >=10.15,<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_2020-001:*:*:*:*:*:*
    • 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:security_update_2021-003:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-004:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-005:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-006:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-007:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.15.7:supplemental_update:*:*:*:*:*:*
  • Apple Inc./macOS Big Surllm-fuzzy
    Range: 11.6.2
  • Apple Inc./macOS Montereyllm-fuzzy
    Range: 12.1
  • Apple Inc./Security Updatellm-fuzzy
    Range: 2021-008 Catalina

Patches

Vulnerability mechanics

References

3

News mentions

0

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