CVE-2021-0393
In Scanner::LiteralBuffer::NewCapacity of scanner.cc, there is a possible out of bounds write due...
In Scanner::LiteralBuffer::NewCapacity of scanner.cc, there is a possible out of bounds write due to an integer overflow. This could lead to remote code execution if an attacker can supply a malicious PAC file, with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11 Android-8.1 Android-9 Android-10Android ID: A-168041375
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
In Scanner::LiteralBuffer::NewCapacity of scanner.cc, there is a possible out of bounds write due to an integer overflow. This could lead to remote code execution if an attacker can supply a malicious PAC file, with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11 Android-8.1 Android-9 Android-10Android ID: A-168041375
- Record
CVE-2021-0393- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - CVSS 2.0
- 6.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:P - Weakness
- CWE-190, CWE-787
- Updated
- 2026-11-02
CVE List No score
In Scanner::LiteralBuffer::NewCapacity of scanner.cc, there is a possible out of bounds write due to an integer overflow. This could lead to remote code execution if an attacker can supply a malicious PAC file, with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11 Android-8.1 Android-9 Android-10Android ID: A-168041375
- Record
CVE-2021-0393- Updated
- 2026-11-02
EUVDEUVD-2021-3012 No score
In Scanner::LiteralBuffer::NewCapacity of scanner.cc, there is a possible out of bounds write due to an integer overflow. This could lead to remote code execution if an attacker can supply a malicious PAC file, with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11 Android-8.1 Android-9 Android-10Android ID: A-168041375
- Record
EUVD-2021-3012- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-g979-fm26-v69p No score
In Scanner::LiteralBuffer::NewCapacity of scanner.cc, there is a possible out of bounds write due...
In Scanner::LiteralBuffer::NewCapacity of scanner.cc, there is a possible out of bounds write due to an integer overflow. This could lead to remote code execution if an attacker can supply a malicious PAC file, with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11 Android-8.1 Android-9 Android-10Android ID: A-168041375
- Record
GHSA-g979-fm26-v69p- Weakness
- CWE-787
- Updated
- 2026-11-02
OSVASB-A-168041375 No score
In Scanner::LiteralBuffer::NewCapacity of scanner.cc, there is a possible out of bounds write due to an integer overflow. This could lead to remote code execution if an attacker can supply a malicious PAC file, with no additional execution privileges needed. User interaction is not needed for exploitation.
- Record
ASB-A-168041375- Updated
- 2026-11-06
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
platform/external/v8Android |
8.1:0 up to 8.1:2021-03-01, plus listed versions 8.1 |
8.1:2021-03-01 |
platform/external/v8Android |
9:0 up to 9:2021-03-01, plus listed versions 9 |
9:2021-03-01 |
platform/external/v8Android |
10:0 up to 10:2021-03-01, plus listed versions 10 |
10:2021-03-01 |
platform/external/v8Android |
11:0 up to 11:2021-03-01, plus listed versions 11 |
11:2021-03-01 |
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | Trinadh465/external_v8_AOSP10_r33_CVE-2021-0393 | 2022-04-29 |
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-2021-0393 is a high vulnerability (CVSS 7.8) in Google Android, published March 1, 2021. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 0.96%, the 61st percentile. Fixed in platform/external/v8 8.1:2021-03-01.