CVE-2021-0436

In CryptoPlugin::decrypt of CryptoPlugin.cpp, there is a possible out of bounds read due to...

5.5 MediumFix available

In CryptoPlugin::decrypt of CryptoPlugin.cpp, there is a possible out of bounds read due to integer overflow. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-8.1 Android-9 Android-10 Android-11Android ID: A-176496160

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

0.14%Down 0.3 points since Apr 14, 2021

What each source reports

NVD Score used 5.5

Record: CVE-2021-0436
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0: 2.1 LowAV:L/AC:L/Au:N/C:P/I:N/A:N
Weakness: CWE-190
Updated: 2026-11-02

CVE List No score

Record: CVE-2021-0436
Updated: 2026-11-02

EUVDEUVD-2021-3055 No score

Record: EUVD-2021-3055
Updated: 2026-11-03

GitHub AdvisoriesGHSA-5759-6r33-c72p No score

In CryptoPlugin::decrypt of CryptoPlugin.cpp, there is a possible out of bounds read due to...

Record: GHSA-5759-6r33-c72p
Weakness: CWE-190
Updated: 2026-11-02

OSVASB-A-176496160 No score

Record: ASB-A-176496160
Updated: 2026-11-05

Affected products

google android

Affected packages

Affected packages
Package	Affected	Fixed
`platform/hardware/interfaces` Android	8.1:0 up to 8.1:2021-04-01, plus listed versions 8.1	8.1:2021-04-01
`platform/frameworks/av` Android	9:0 up to 9:2021-04-01, plus listed versions 9	9:2021-04-01
`platform/hardware/interfaces` Android	9:0 up to 9:2021-04-01, plus listed versions 9	9:2021-04-01
`platform/frameworks/av` Android	10:0 up to 10:2021-04-01, plus listed versions 10	10:2021-04-01
`platform/hardware/interfaces` Android	10:0 up to 10:2021-04-01, plus listed versions 10	10:2021-04-01
`platform/frameworks/av` Android	11:0 up to 11:2021-04-01, plus listed versions 11	11:2021-04-01
`platform/hardware/interfaces` Android	11:0 up to 11:2021-04-01, plus listed versions 11	11:2021-04-01

History

History
Recorded	Changed	Sources
Nov 5, 2026	facts	OSV
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-0436 is a medium vulnerability (CVSS 5.5) in Google Android, published April 1, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.14%, the 3rd percentile. Fixed in platform/hardware/interfaces 8.1:2021-04-01.