Read the docs
TI-2021-11053 Aliases CVE-2021-30668GHSA-f9wq-3588-gpmc

Improper authentication in Apple macOS

Priority LOW 21CWE-287Published · Updated

Key facts

Attack vector
Physical
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
None · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-287.

Summary

This issue was addressed with improved checks. This issue is fixed in macOS Big Sur 11.4. A person with physical access to a Mac may be able to bypass Login Window during a software update.

Why it matters now

EPSS 0.00268 19th percentileScored 2026-11-07
Fix Fixed macOS (Apple): 11.4

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
ApplemacOSbefore 11.411.4Patch availableCNA
  • macOS VendorApple Affected before 11.4 Fixed in 11.4 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*before 11.4VulnerableApple
  • cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* Versions before 11.4 Vulnerable ·Apple

Remediation

  • Fix · CNA macOS (Apple) Fixed in 11.4

Fixed in the same release

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

  • Release ·

    Apple macOS 11.4

    70 records Highest priority Priority CRITICAL 1 CRITICAL, 7 MEDIUM, 62 LOW

    Other records, highest priority first

    • TI-2021-11096 Missing authorization in Apple macOSPriority CRITICAL 93
    • TI-2021-11104 Apple macOS: An attacker in a privileged network position may be able to leak sensitive…Priority MEDIUM 50
    • TI-2021-11062 Apple macOS: A remote attacker may be able to cause unexpected application termination or…Priority MEDIUM 48
    Show all 70 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-30668
  2. 2026-10-03 Alias added: GHSA-f9wq-3588-gpmc

References

Advisory 1

  • 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