CVE-2021-0471

In decrypt_1_2 of CryptoPlugin.cpp, there is a possible out of bounds read due to an integer...

5.5 MediumFix available

In decrypt_1_2 of CryptoPlugin.cpp, there is a possible out of bounds read due to an 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-9 Android-10 Android-11 Android-8.1Android ID: A-176444786

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-2021-0471
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-125, CWE-190
Updated: 2026-11-02

CVE List No score

Record: CVE-2021-0471
Updated: 2026-11-02

EUVDEUVD-2021-3090 No score

Record: EUVD-2021-3090
Updated: 2026-11-03

GitHub AdvisoriesGHSA-hx4h-96rx-2gc2 No score

In decrypt_1_2 of CryptoPlugin.cpp, there is a possible out of bounds read due to an integer...

Record: GHSA-hx4h-96rx-2gc2
Weakness: CWE-125, CWE-190
Updated: 2026-11-02

OSVASB-A-176444786 No score

Record: ASB-A-176444786
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-2021-0471 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.