Read the docs
TI-2020-16964 Aliases CVE-2020-27907GHSA-5mg6-pjpp-662m

Out-of-bounds write in Apple macOS

Priority LOW 36CWE-787Published · 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-787 and the CVSS impact.

Summary

A memory corruption issue was addressed with improved memory handling. This issue is fixed in macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave, macOS Big Sur 11.0.1. An application may be able to execute arbitrary code with kernel privileges.

Why it matters now

EPSS 0.01019 63rd percentileScored 2026-11-07
Fix Fixed macOS (Apple): 11.0, 11.1

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
ApplemacOSbefore 11.011.0Patch availableCNA
ApplemacOSbefore 11.111.1Patch availableCNA
  • macOS VendorApple Affected before 11.0 Fixed in 11.0 Patch available CNA
  • macOS VendorApple Affected before 11.1 Fixed in 11.1 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*before 11.0.1; before 11.1.0VulnerableApple
  • cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* Versions before 11.0.1; before 11.1.0 Vulnerable ·Apple

Remediation

  • Fix · CNA macOS (Apple) Fixed in 11.0
  • Fix · CNA macOS (Apple) Fixed in 11.1

Fixed in the same release

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

  • Release ·

    Apple macOS 11.1

    48 records Highest priority Priority MEDIUM 2 MEDIUM, 46 LOW

    Other records, highest priority first

    • TI-2020-16976 Use after free in Apple watchOSPriority MEDIUM 41
    • TI-2020-17807 Apple macOS: An attacker in a privileged network position may be able to bypass…Priority MEDIUM 40
    • TI-2020-08038 Out-of-bounds write in Apple tvOSPriority LOW 39
    Show all 48 records →
  • Release ·

    Apple macOS 11.0

    31 records Highest priority Priority MEDIUM 1 MEDIUM, 30 LOW

    Other records, highest priority first

    Show all 31 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-27907
  2. 2026-10-03 Alias added: GHSA-5mg6-pjpp-662m

References

Advisory 2

  • TI-2026-46583 Improper authentication in Apple macOS KEVCVSS 3.1CRITICAL 9.8
  • 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
See all 3490 →

Sources

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