CVE-2021-0476
In FindOrCreatePeer of btif_av.cc, there is a possible use after free due to a race condition....
In FindOrCreatePeer of btif_av.cc, there is a possible use after free due to a race condition. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11 Android-9 Android-10Android ID: A-169252501
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 FindOrCreatePeer of btif_av.cc, there is a possible use after free due to a race condition. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11 Android-9 Android-10Android ID: A-169252501
- Record
CVE-2021-0476- 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
- 6.9 Medium
AV:L/AC:M/Au:N/C:C/I:C/A:C - Weakness
- CWE-362
- Updated
- 2026-11-02
CVE List No score
In FindOrCreatePeer of btif_av.cc, there is a possible use after free due to a race condition. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11 Android-9 Android-10Android ID: A-169252501
- Record
CVE-2021-0476- Updated
- 2026-11-02
EUVDEUVD-2021-3095 No score
In FindOrCreatePeer of btif_av.cc, there is a possible use after free due to a race condition. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11 Android-9 Android-10Android ID: A-169252501
- Record
EUVD-2021-3095- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-cc2v-chg5-845p
In FindOrCreatePeer of btif_av.cc, there is a possible use after free due to a race condition....
In FindOrCreatePeer of btif_av.cc, there is a possible use after free due to a race condition. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11 Android-9 Android-10Android ID: A-169252501
- Record
GHSA-cc2v-chg5-845p- 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 - Weakness
- CWE-416
- Updated
- 2026-11-02
OSVASB-A-169252501 No score
In FindOrCreatePeer of btif_av.cc, there is a possible use after free due to a race condition. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
- Record
ASB-A-169252501- Updated
- 2026-11-05
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
platform/system/btAndroid |
9:0 up to 9:2021-05-01, plus listed versions 9 |
9:2021-05-01 |
platform/system/btAndroid |
10:0 up to 10:2021-05-01, plus listed versions 10 |
10:2021-05-01 |
platform/system/btAndroid |
11:0 up to 11:2021-05-01, plus listed versions 11 |
11:2021-05-01 |
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | nanopathi/system_bt_AOSP10_r33_CVE-2021-0476 | 2022-04-04 |
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-2021-0476 is a high vulnerability (CVSS 7.0) in Google Android, published May 1, 2021. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 0.18%, the 7th percentile. Fixed in platform/system/bt 9:2021-05-01.