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

CVE-2021-1875

CVE-2021-1875

Description

A double free issue was addressed with improved memory management. This issue is fixed in Security Update 2021-002 Catalina, Security Update 2021-003 Mojave, iOS 14.5 and iPadOS 14.5, watchOS 7.4, tvOS 14.5, macOS Big Sur 11.3. Processing a maliciously crafted file may lead to heap corruption.

AI Insight

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

Affected products

55
  • 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 X41 versions
    cpe:2.3:o:apple:mac_os_x:10.14.0:*:*:*:*:*:*:*+ 40 more
    • cpe:2.3:o:apple:mac_os_x:10.14.0:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.14.1:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.14.2:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.14.3:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.14.4:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.14.4:beta4:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x:10.14.5:*:*:*:*:*:*:*
    • cpe:2.3:o:apple:mac_os_x: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_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: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:*:*:*:*:*:*:*
    • 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_2020-001:*:*:*:*:*:*
    • 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_2020:*:*:*:*:*:*
    • 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:*:*:*:*:*:*:*
  • Apple Inc./macOS2 versions
    cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*range: >=11.0,<11.3
    • (no CPE)range: unspecified
  • Apple Inc./tvOS3 versions
    cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*+ 2 more
    • cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*range: <14.5
    • (no CPE)range: =14.5
    • (no CPE)range: unspecified
  • Apple Inc./watchOS3 versions
    cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*+ 2 more
    • cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*range: <7.4
    • (no CPE)range: =7.4
    • (no CPE)range: unspecified
  • Apple Inc./macOS Big Surllm-fuzzy
    Range: =11.3
  • Apple Inc./iOSllm-fuzzy
    Range: =14.5
  • Apple Inc./iOS and iPadOScpe-rescue
    Range: unspecified

Patches

Vulnerability mechanics

References

6

News mentions

0

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