CVE-2021-39803
In ~Impl of C2AllocatorIon.cpp, there is a possible out of bounds read due to a use after free....
In ~Impl of C2AllocatorIon.cpp, there is a possible out of bounds read due to a use after free. This could lead to remote information disclosure with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-10 Android-11 Android-12 Android-12LAndroid ID: A-193790350
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
In ~Impl of C2AllocatorIon.cpp, there is a possible out of bounds read due to a use after free. This could lead to remote information disclosure with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-10 Android-11 Android-12 Android-12LAndroid ID: A-193790350
- Record
CVE-2021-39803- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N - CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:P/I:N/A:N - Weakness
- CWE-416
- Updated
- 2026-11-02
CVE List No score
In ~Impl of C2AllocatorIon.cpp, there is a possible out of bounds read due to a use after free. This could lead to remote information disclosure with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-10 Android-11 Android-12 Android-12LAndroid ID: A-193790350
- Record
CVE-2021-39803- Updated
- 2026-11-02
EUVDEUVD-2021-26160 No score
In ~Impl of C2AllocatorIon.cpp, there is a possible out of bounds read due to a use after free. This could lead to remote information disclosure with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-10 Android-11 Android-12 Android-12LAndroid ID: A-193790350
- Record
EUVD-2021-26160- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-rpq4-mrj2-p6qj
In ~Impl of C2AllocatorIon.cpp, there is a possible out of bounds read due to a use after free....
In ~Impl of C2AllocatorIon.cpp, there is a possible out of bounds read due to a use after free. This could lead to remote information disclosure with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-10 Android-11 Android-12 Android-12LAndroid ID: A-193790350
- Record
GHSA-rpq4-mrj2-p6qj- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N - Weakness
- CWE-125
- Updated
- 2026-11-02
OSVASB-A-193790350 No score
In ~Impl of C2AllocatorIon.cpp, there is a possible out of bounds read due to a use after free. This could lead to remote information disclosure with no additional execution privileges needed. User interaction is needed for exploitation.
- Record
ASB-A-193790350- Updated
- 2026-11-09
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
platform/frameworks/avAndroid |
10:0 up to 10:2022-04-01, plus listed versions 10 |
10:2022-04-01 |
platform/frameworks/avAndroid |
11:0 up to 11:2022-04-01, plus listed versions 11 |
11:2022-04-01 |
platform/frameworks/avAndroid |
12:0 up to 12:2022-04-01, plus listed versions 12 |
12:2022-04-01 |
platform/frameworks/avAndroid |
12L:0 up to 12L:2022-04-01, plus listed versions 12L |
12L:2022-04-01 |
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-2021-39803 is a medium vulnerability (CVSS 6.5) in Google Android, published April 1, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.65%, the 51st percentile. Fixed in platform/frameworks/av 10:2022-04-01.