CVE-2021-0688
In lockNow of PhoneWindowManager.java, there is a possible lock screen bypass due to a race...
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
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- High
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
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
- Record
CVE-2021-0688- CVSS 3.1
- 7.0 High
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 4.4 Medium
AV:L/AC:M/Au:N/C:P/I:P/A:P - Weakness
- CWE-362
- Updated
- 2026-11-02
CVE ListNo score
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
- Record
CVE-2021-0688- Updated
- 2026-11-02
EUVDEUVD-2021-3307No score
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
- Record
EUVD-2021-3307- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-jr25-cxp3-7whxNo score
In lockNow of PhoneWindowManager.java, there is a possible lock screen bypass due to a race...
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
- Record
GHSA-jr25-cxp3-7whx- Weakness
- CWE-362
- Updated
- 2026-11-02
OSVASB-A-161149543No score
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.
- Record
ASB-A-161149543- Updated
- 2026-11-09
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
platform/frameworks/baseAndroid | 8.1:0 up to 8.1:2021-09-01, plus listed versions 8.1 | 8.1:2021-09-01 |
platform/frameworks/baseAndroid | 9:0 up to 9:2021-09-01, plus listed versions 9 | 9:2021-09-01 |
platform/frameworks/baseAndroid | 10:0 up to 10:2021-09-01, plus listed versions 10 | 10:2021-09-01 |
platform/frameworks/baseAndroid | 11:0 up to 11:2021-09-01, plus listed versions 11 | 11:2021-09-01 |
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | Satheesh575555/frameworks_base_AOSP10_r33_CVE-2021-0688 | 2022-04-12 |
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | OSV | |
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-0688 is a high vulnerability (CVSS 7.0) in Google Android, published September 1, 2021. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 0.16%, the 5th percentile. Fixed in platform/frameworks/base 8.1:2021-09-01.