CVE-2021-1755

LowCVSS 2.4/10Last modified Jun 17, 2026

Description

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.

Metrics

CVSS 3.1 2.4/10CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Weakness enumeration

CWE-862

Affected software

No affected versions have been published.

Timeline

Published
Apr 2, 2021
Last modified
Jun 17, 2026
NVD status
Modified

Related CVEs from 2021

CVE-2021-17562.4A lock screen issue allowed access to contacts on a locked device. This issue was addressed with improved state management. This issue is fiCVE-2021-17577.8An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 CatalCVE-2021-17587.8An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 CatalCVE-2021-17597.8An out-of-bounds read was addressed with improved input validation. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 CataCVE-2021-17605.5A memory corruption issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 CVE-2021-17617.5This issue was addressed with improved checks. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security UpdateCVE-2021-17627.8An out-of-bounds write was addressed with improved input validation. This issue is fixed in iOS 14.4 and iPadOS 14.4, macOS Big Sur 11.2, SeCVE-2021-17637.8A buffer overflow was addressed with improved bounds checking. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina,CVE-2021-17647.5A use after free issue was addressed with improved memory management. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 CaCVE-2021-17656.5This issue was addressed with improved iframe sandbox enforcement. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 CatalCVE-2021-17665.5This issue was addressed with improved checks. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security UpdateCVE-2021-17677.8This issue was addressed with improved checks. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update
CVE-2021-1755: Low severity, CVSS 2.4 | Vulnix