CVE-2021-0330
In add_user_ce and remove_user_ce of storaged.cpp, there is a possible use-after-free due to...
CVE-2021-0330 is a high vulnerability (CVSS 7.8) in Google Android, published February 1, 2021. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 0.27%, the 19th percentile. Fixed in platform/system/core 8.0:2021-02-01.
- Severity
- 7.8 HighCVSS 3.1, NVD
- Exploit chance
- 0.27%EPSS, 19th percentile
- Exploitation
- None known1 public exploit
- Fixed in
8.0:2021-02-01platform/system/core +4 more
Description
In add_user_ce and remove_user_ce of storaged.cpp, there is a possible use-after-free due to improper locking. This could lead to local escalation of privilege in storaged with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-9 Android-10 Android-11Android ID: A-170732441
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
platform/system/coreAndroid | 8.0:0 up to 8.0:2021-02-01, plus listed versions 8.0 | 8.0:2021-02-01 |
platform/system/coreAndroid | 8.1:0 up to 8.1:2021-02-01, plus listed versions 8.1 | 8.1:2021-02-01 |
platform/system/coreAndroid | 9:0 up to 9:2021-02-01, plus listed versions 9 | 9:2021-02-01 |
platform/system/coreAndroid | 10:0 up to 10:2021-02-01, plus listed versions 10 | 10:2021-02-01 |
platform/system/coreAndroid | 11:0 up to 11:2021-02-01, plus listed versions 11 | 11:2021-02-01 |
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | Satheesh575555/system_core_AOSP10_r33-CVE-2021-0330 | 2022-03-31 |
What each source reports
NVD Score used
In add_user_ce and remove_user_ce of storaged.cpp, there is a possible use-after-free due to improper locking. This could lead to local escalation of privilege in storaged with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-9 Android-10 Android-11Android ID: A-170732441
- Record
CVE-2021-0330- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.2 High
AV:L/AC:L/Au:N/C:C/I:C/A:C - Weakness
- CWE-416
- Updated
- 2026-11-02
CVE ListNo score
In add_user_ce and remove_user_ce of storaged.cpp, there is a possible use-after-free due to improper locking. This could lead to local escalation of privilege in storaged with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-9 Android-10 Android-11Android ID: A-170732441
- Record
CVE-2021-0330- Updated
- 2026-11-02
EUVDEUVD-2021-2949No score
In add_user_ce and remove_user_ce of storaged.cpp, there is a possible use-after-free due to improper locking. This could lead to local escalation of privilege in storaged with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-9 Android-10 Android-11Android ID: A-170732441
- Record
EUVD-2021-2949- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-8pqc-794r-q3c3No score
In add_user_ce and remove_user_ce of storaged.cpp, there is a possible use-after-free due to...
In add_user_ce and remove_user_ce of storaged.cpp, there is a possible use-after-free due to improper locking. This could lead to local escalation of privilege in storaged with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-9 Android-10 Android-11Android ID: A-170732441
- Record
GHSA-8pqc-794r-q3c3- Weakness
- CWE-416
- Updated
- 2026-11-02
OSVASB-A-170732441No score
In add_user_ce and remove_user_ce of storaged.cpp, there is a possible use-after-free due to improper locking. This could lead to local escalation of privilege in storaged with no additional execution privileges needed. User interaction is not needed for exploitation.
- Record
ASB-A-170732441- Updated
- 2026-11-09
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.