CVE-2020-0409
In create of FileMap.cpp, there is a possible out of bounds write due to an integer overflow....
CVE-2020-0409 is a high vulnerability (CVSS 7.8) in Google Android, published November 1, 2020. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 0.26%, the 17th percentile. Fixed in platform/system/core 11-next:2020-11-01.
In create of FileMap.cpp, there is a possible out of bounds write due to an integer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10 Android-8.0 Android-8.1 Android-9Android ID: A-156997193
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
What each source reports
NVD Score used
In create of FileMap.cpp, there is a possible out of bounds write due to an integer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10 Android-8.0 Android-8.1 Android-9Android ID: A-156997193
- Record
CVE-2020-0409- 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
- 4.6 Medium
AV:L/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-190, CWE-787
- Updated
- 2026-11-02
CVE List No score
In create of FileMap.cpp, there is a possible out of bounds write due to an integer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10 Android-8.0 Android-8.1 Android-9Android ID: A-156997193
- Record
CVE-2020-0409- Updated
- 2026-11-02
EUVDEUVD-2020-1911 No score
In create of FileMap.cpp, there is a possible out of bounds write due to an integer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10 Android-8.0 Android-8.1 Android-9Android ID: A-156997193
- Record
EUVD-2020-1911- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-43f5-xw85-rggm No score
In create of FileMap.cpp, there is a possible out of bounds write due to an integer overflow....
In create of FileMap.cpp, there is a possible out of bounds write due to an integer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10 Android-8.0 Android-8.1 Android-9Android ID: A-156997193
- Record
GHSA-43f5-xw85-rggm- Weakness
- CWE-787
- Updated
- 2026-11-02
OSVUBUNTU-CVE-2020-0409
In create of FileMap.cpp, there is a possible out of bounds write due to an integer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10 Android-8.0 Android-8.1 Android-9Android ID: A-156997193
- Record
UBUNTU-CVE-2020-0409- 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 - Updated
- 2026-11-02
OSVASB-A-156997193 No score
In create of FileMap.cpp, there is a possible out of bounds write due to an integer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
- Record
ASB-A-156997193- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
platform/system/coreAndroid |
11-next:0 up to 11-next:2020-11-01, plus listed versions 11-next |
11-next:2020-11-01 |
platform/system/coreAndroid |
8.0:0 up to 8.0:2020-11-01, plus listed versions 8.0 |
8.0:2020-11-01 |
platform/system/coreAndroid |
8.1:0 up to 8.1:2020-11-01, plus listed versions 8.1 |
8.1:2020-11-01 |
platform/system/coreAndroid |
9:0 up to 9:2020-11-01, plus listed versions 9 |
9:2020-11-01 |
platform/system/coreAndroid |
10:0 up to 10:2020-11-01, plus listed versions 10 |
10:2020-11-01 |
android-platform-system-coreUbuntu:16.04:LTS |
All versions, plus listed versions 21-61:6.0.0+r26-11:6.0.1+r16-11:6.0.1+r16-3 |
None known |
android-platform-system-coreUbuntu:18.04:LTS |
All versions, plus listed versions 1:7.0.0+r33-21:8.1.0+r23-5~18.04 |
None known |
android-platform-system-coreUbuntu:20.04:LTS |
All versions, plus listed versions 1:8.1.0+r23-51:8.1.0+r23-5ubuntu11:8.1.0+r23-5ubuntu2 |
None known |
android-platform-system-coreUbuntu:22.04:LTS |
All versions, plus listed versions 1:10.0.0+r36-71:10.0.0+r36-81:10.0.0+r36-9 |
None known |
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | nanopathi/system_core_AOSP10_r33_CVE-2020-0409 | 2022-04-21 |
History
| When | Changed | Sources |
|---|---|---|
| 2026-11-03 | aliases | EUVD |
| 2026-11-02 | created | CVE List, GitHub Advisories, NVD, OSV, PoC in GitHub |