CVE-2021-0320
In is_device_locked and set_device_locked of keystore_keymaster_enforcement.h, there is a...
CVE-2021-0320 is a medium vulnerability (CVSS 4.7) in Google Android, published January 1, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.11%, the 1st percentile. Fixed in platform/system/security 10:2021-01-01.
- Severity
- 4.7 MediumCVSS 3.1, NVD
- Exploit chance
- 0.11%EPSS, 1st percentile
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
10:2021-01-01platform/system/security +1 more
Description
In is_device_locked and set_device_locked of keystore_keymaster_enforcement.h, there is a possible bypass of lockscreen requirements for keyguard bound keys due to a race condition. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation. Product: Android; Versions: Android-10, Android-11; Android ID: A-169933423.
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
- None
- Availability
- None
Exploit likelihood
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
platform/system/securityAndroid | 10:0 up to 10:2021-01-01, plus listed versions 10 | 10:2021-01-01 |
platform/system/securityAndroid | 11:0 up to 11:2021-01-01, plus listed versions 11 | 11:2021-01-01 |
What each source reports
NVD Score used
In is_device_locked and set_device_locked of keystore_keymaster_enforcement.h, there is a possible bypass of lockscreen requirements for keyguard bound keys due to a race condition. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation. Product: Android; Versions: Android-10, Android-11; Android ID: A-169933423.
- Record
CVE-2021-0320- CVSS 3.1
- 4.7 Medium
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N - CVSS 2.0
- 1.9 Low
AV:L/AC:M/Au:N/C:P/I:N/A:N - Weakness
- CWE-362
- Updated
- 2026-11-02
CVE ListNo score
In is_device_locked and set_device_locked of keystore_keymaster_enforcement.h, there is a possible bypass of lockscreen requirements for keyguard bound keys due to a race condition. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation. Product: Android; Versions: Android-10, Android-11; Android ID: A-169933423.
- Record
CVE-2021-0320- Updated
- 2026-11-02
EUVDEUVD-2021-2939No score
In is_device_locked and set_device_locked of keystore_keymaster_enforcement.h, there is a possible bypass of lockscreen requirements for keyguard bound keys due to a race condition. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation. Product: Android; Versions: Android-10, Android-11; Android ID: A-169933423.
- Record
EUVD-2021-2939- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-6pfh-vwh5-gvrcNo score
In is_device_locked and set_device_locked of keystore_keymaster_enforcement.h, there is a...
In is_device_locked and set_device_locked of keystore_keymaster_enforcement.h, there is a possible bypass of lockscreen requirements for keyguard bound keys due to a race condition. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation. Product: Android; Versions: Android-10, Android-11; Android ID: A-169933423.
- Record
GHSA-6pfh-vwh5-gvrc- Weakness
- CWE-362
- Updated
- 2026-11-02
OSVASB-A-169933423No score
In is_device_locked and set_device_locked of keystore_keymaster_enforcement.h, there is a possible bypass of lockscreen requirements for keyguard bound keys due to a race condition. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.
- Record
ASB-A-169933423- Updated
- 2026-11-10
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | OSV | |
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.