CVE-2021-0556
In getBlockSum of fastcodemb.cpp, there is a possible out of bounds read due to a heap buffer...
In getBlockSum of fastcodemb.cpp, there is a possible out of bounds read due to a heap buffer overflow. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11Android ID: A-172716941
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
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
In getBlockSum of fastcodemb.cpp, there is a possible out of bounds read due to a heap buffer overflow. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11Android ID: A-172716941
- Record
CVE-2021-0556- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - CVSS 2.0
- 2.1 Low
AV:L/AC:L/Au:N/C:P/I:N/A:N - Weakness
- CWE-125
- Updated
- 2026-11-02
CVE List No score
In getBlockSum of fastcodemb.cpp, there is a possible out of bounds read due to a heap buffer overflow. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11Android ID: A-172716941
- Record
CVE-2021-0556- Updated
- 2026-11-02
EUVDEUVD-2021-3175 No score
In getBlockSum of fastcodemb.cpp, there is a possible out of bounds read due to a heap buffer overflow. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11Android ID: A-172716941
- Record
EUVD-2021-3175- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-c448-842q-vf3p No score
In getBlockSum of fastcodemb.cpp, there is a possible out of bounds read due to a heap buffer...
In getBlockSum of fastcodemb.cpp, there is a possible out of bounds read due to a heap buffer overflow. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11Android ID: A-172716941
- Record
GHSA-c448-842q-vf3p- Weakness
- CWE-125
- Updated
- 2026-11-02
OSVPUB-A-172716941 No score
In getBlockSum of fastcodemb.cpp, there is a possible out of bounds read due to a heap buffer overflow. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.
- Record
PUB-A-172716941- Updated
- 2026-11-09
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
platform/frameworks/avAndroid |
11:0 up to 11:2021-06-01, plus listed versions 11 |
11:2021-06-01 |
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-2021-0556 is a medium vulnerability (CVSS 5.5) in Google Android, published June 1, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.12%, the 1st percentile. Fixed in platform/frameworks/av 11:2021-06-01.