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CVE-2021-0688 Details

Description

In lockNow of PhoneWindowManager.java, there is a possible lock screen bypass due to a race condition. This could lead to local escalation of privilege with User execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10 Android-11 Android-8.1 Android-9Android ID: A-161149543

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7 HIGHVector:CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://source.android.com/security/bulletin/2021-09-01	CVE	PatchVendor Advisory
https://source.android.com/security/bulletin/2021-09-01	[email protected]	PatchVendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-362	Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')	[email protected]

Affected Products

Product	Versions
google android	8.1 9.0 10.0 11.0
CPE cpe:2.3:o:google:android:8.1:::::::* cpe:2.3:o:google:android:9.0:::::::* cpe:2.3:o:google:android:10.0:::::::* cpe:2.3:o:google:android:11.0:::::::* Remediation No remediation found in references.

Change History

4 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Oct 8, 2021	Initial Analysis	[email protected]