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

CVE-2021-30939

CVE-2021-30939

Description

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Big Sur 11.6.2, tvOS 15.2, macOS Monterey 12.1, Security Update 2021-008 Catalina, iOS 15.2 and iPadOS 15.2, watchOS 8.3. 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

27
  • Apple Inc./Ipados2 versions
    cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*range: <15.2
    • (no CPE)range: before 15.2
  • Apple Inc./Iphone OS
    cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
    Range: <15.2
  • Apple Inc./Mac OS X12 versions
    cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*+ 11 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_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: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:*:*:*:*:*:*
  • Apple Inc./macOS2 versions
    cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*range: >=11.0,<11.6.2
    • (no CPE)range: unspecified
  • Apple Inc./tvOS2 versions
    cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*range: <15.2
    • (no CPE)range: before 15.2
  • Apple Inc./watchOS3 versions
    cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*+ 2 more
    • cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*range: <8.3
    • (no CPE)range: before 8.3
    • (no CPE)range: unspecified
  • Apple Inc./macOS Big Surllm-fuzzy
    Range: before 11.6.2
  • Apple Inc./Security Updatellm-fuzzy
    Range: before 2021-008
  • Apple Inc./macOS Montereyllm-fuzzy
    Range: before 12.1
  • Apple Inc./iOSllm-fuzzy
    Range: before 15.2
  • Apple Inc./iOS and iPadOScpe-rescue
    Range: unspecified

Patches

Vulnerability mechanics

References

8

News mentions

0

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