TI-2021-01468 Aliases CVE-2021-1755 GHSA-xpxw-wxvf-889j

Missing authorization in Apple macOS

LOW 12CWE-862Published 2021-04-02 · Updated 2024-08-03

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-862.

Summary

A lock screen issue allowed access to contacts on a locked device. This issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.0.1. A person with physical access to an iOS device may be able to access contacts from the lock screen.

Why it matters now

EPSS 0.00284 21st percentileScored 2026-11-07

Fix Fixed macOS (Apple): 11.0

SSVC decision points

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

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Apple	macOS	before 11.0	11.0	Patch available	CNA

macOS VendorApple Affected before 11.0 Fixed in 11.0 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:o:apple:macos::::::::	before 11.0.1	Vulnerable	Apple

cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* Versions before 11.0.1 Vulnerable ·Apple

Remediation

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 · 2021-04-02
Apple macOS 11.0
31 records Highest priority Priority MEDIUM 1 MEDIUM, 30 LOW
Other records, highest priority first
- TI-2020-16976 Use after free in Apple watchOSPriority MEDIUM 41
- TI-2020-08038 Out-of-bounds write in Apple tvOSPriority LOW 39
- TI-2020-08033 Buffer overflow in Apple tvOSPriority LOW 37
Show all 31 records →

Timeline

2026-10-02 Threatist record created from CVE-2021-1755
2026-10-03 Alias added: GHSA-xpxw-wxvf-889j

References

Advisory 1

https://support.apple.com/en-us/HT211931

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