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TI-2020-08022 Aliases CVE-2020-9949GHSA-54xg-w6ch-fmhh

Use after free in Apple macOS

Priority LOW 37CWE-416Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-416 and the CVSS impact.

Summary

A use after free issue was addressed with improved memory management. This issue is fixed in macOS Big Sur 11.0.1, watchOS 7.0, iOS 14.0 and iPadOS 14.0, macOS Catalina 10.15.6, Security Update 2020-004 Mojave, Security Update 2020-004 High Sierra, tvOS 14.0. An application may be able to execute arbitrary code with kernel privileges.

Why it matters now

EPSS 0.01501 74th percentileScored 2026-11-07
Fix Fixed macOS (Apple): 10.15, 14.0, 7.0 +1

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
ApplemacOSbefore 10.1510.15Patch availableCNA
ApplemacOSbefore 14.014.0Patch availableCNA
ApplemacOSbefore 7.07.0Patch availableCNA
ApplemacOSbefore 14.014.0Patch availableCNA
ApplemacOSbefore 11.011.0Patch availableCNA
  • macOS VendorApple Affected before 10.15 Fixed in 10.15 Patch available CNA
  • macOS VendorApple Affected before 14.0 Fixed in 14.0 Patch available CNA
  • macOS VendorApple Affected before 7.0 Fixed in 7.0 Patch available CNA
  • macOS VendorApple Affected before 14.0 Fixed in 14.0 Patch available CNA
  • macOS VendorApple Affected before 11.0 Fixed in 11.0 Patch available CNA

CPE configurations NVD · 5

CPEVersionsRoleVendor
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*before 14.0VulnerableApple
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*before 14.0VulnerableApple
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*before 10.15.6; 11.0.0 to before 11.0.1VulnerableApple
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*before 14.0VulnerableApple
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*before 7.0VulnerableApple
  • cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* Versions before 14.0 Vulnerable ·Apple
  • cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* Versions before 14.0 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* Versions before 10.15.6; 11.0.0 to before 11.0.1 Vulnerable ·Apple
  • cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* Versions before 14.0 Vulnerable ·Apple
  • cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* Versions before 7.0 Vulnerable ·Apple

Remediation

  • Fix · CNA macOS (Apple) Fixed in 10.15
  • Fix · CNA macOS (Apple) Fixed in 14.0
  • Fix · CNA macOS (Apple) Fixed in 7.0
  • Fix · CNA macOS (Apple) Fixed in 14.0
  • Fix · CNA macOS (Apple) Fixed in 11.0

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Apple macOS 11.0

    45 records Highest priority Priority CRITICAL 2 CRITICAL, 1 HIGH, 4 MEDIUM, 38 LOW

    Other records, highest priority first

    • TI-2020-16987 Type confusion in Apple watchOSPriority CRITICAL 93
    • TI-2020-16985 Out-of-bounds write in Apple watchOSPriority CRITICAL 93
    • TI-2020-17004 Apple watchOS: A malicious application may be able to disclose kernel memoryPriority HIGH 82
    Show all 45 records →
  • Release ·

    Apple macOS 10.15

    8 records Highest priority Priority CRITICAL 2 CRITICAL, 1 HIGH, 5 LOW

    Other records, highest priority first

    • TI-2020-16987 Type confusion in Apple watchOSPriority CRITICAL 93
    • TI-2020-16985 Out-of-bounds write in Apple watchOSPriority CRITICAL 93
    • TI-2020-17004 Apple watchOS: A malicious application may be able to disclose kernel memoryPriority HIGH 82
    Show all 8 records →
Show 1 more group
  • Release ·

    Apple macOS 14.0

    5 records Highest priority Priority LOW 5 LOW

    Other records, highest priority first

    Show all 5 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-9949
  2. 2026-10-03 Alias added: GHSA-54xg-w6ch-fmhh

References

Advisory 6

  • TI-2025-28008 Out-of-bounds write in Apple iOS and iPadOS KEVCVSS 3.1CRITICAL 10.0
  • TI-2025-22441 Apple iOS and iPadOS: An attacker with arbitrary read and write capability may be able to… KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-22440 Memory corruption in Apple iOS and iPadOS KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-17951 Out-of-bounds write in Apple Safari KEVCVSS 3.1CRITICAL 10.0
  • TI-2025-17847 Use after free in Apple iOS and iPadOS KEVCVSS 3.1CRITICAL 10.0
  • TI-2022-06854 Out-of-bounds write in Apple iOS and iPadOS KEVCVSS 3.1CRITICAL 9.8
See all 2382 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences