CVE-2021-39675
In GKI_getbuf of gki_buffer.cc, there is a possible out of bounds write due to a heap buffer...
In GKI_getbuf of gki_buffer.cc, there is a possible out of bounds write due to a heap buffer overflow. This could lead to remote escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-12Android ID: A-205729183
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
In GKI_getbuf of gki_buffer.cc, there is a possible out of bounds write due to a heap buffer overflow. This could lead to remote escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-12Android ID: A-205729183
- Record
CVE-2021-39675- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 10.0 High
AV:N/AC:L/Au:N/C:C/I:C/A:C - Weakness
- CWE-787
- Updated
- 2026-11-02
CVE List No score
In GKI_getbuf of gki_buffer.cc, there is a possible out of bounds write due to a heap buffer overflow. This could lead to remote escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-12Android ID: A-205729183
- Record
CVE-2021-39675- Updated
- 2026-11-02
EUVDEUVD-2021-26032 No score
In GKI_getbuf of gki_buffer.cc, there is a possible out of bounds write due to a heap buffer overflow. This could lead to remote escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-12Android ID: A-205729183
- Record
EUVD-2021-26032- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-24w9-mrr8-9p7h No score
In GKI_getbuf of gki_buffer.cc, there is a possible out of bounds write due to a heap buffer...
In GKI_getbuf of gki_buffer.cc, there is a possible out of bounds write due to a heap buffer overflow. This could lead to remote escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-12Android ID: A-205729183
- Record
GHSA-24w9-mrr8-9p7h- Weakness
- CWE-787
- Updated
- 2026-11-02
OSVASB-A-205729183 No score
In GKI_getbuf of gki_buffer.cc, there is a possible out of bounds write due to a heap buffer overflow. This could lead to remote escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
- Record
ASB-A-205729183- Updated
- 2026-11-05
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
platform/system/nfcAndroid |
12:0 up to 12:2022-02-01, plus listed versions 12 |
12:2022-02-01 |
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.
In short
CVE-2021-39675 is a critical vulnerability (CVSS 9.8) in Google Android, published February 1, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 5.48%, the 92nd percentile. Fixed in platform/system/nfc 12:2022-02-01.