CVE-2021-0644

In conditionallyRemoveIdentifiers of SubscriptionController.java, there is a possible way to...

5.5 MediumFix available

In conditionallyRemoveIdentifiers of SubscriptionController.java, there is a possible way to retrieve a trackable identifier due to a missing permission check. This could lead to local information disclosure with User execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11 Android-10Android ID: A-181053462

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

0.11%Down 0.3 points since Oct 7, 2021

What each source reports

NVD Score used 5.5

Record: CVE-2021-0644
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-200
Updated: 2026-11-02

CVE List No score

Record: CVE-2021-0644
Updated: 2026-11-02

EUVDEUVD-2021-3263 No score

Record: EUVD-2021-3263
Updated: 2026-11-03

GitHub AdvisoriesGHSA-x87c-8v42-cm55 5.5

In conditionallyRemoveIdentifiers of SubscriptionController.java, there is a possible way to...

Record: GHSA-x87c-8v42-cm55
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weakness: CWE-863
Updated: 2026-11-02

OSVASB-A-181053462 No score

Record: ASB-A-181053462
Updated: 2026-11-05

Affected products

google android

Affected packages

Affected packages
Package	Affected	Fixed
`platform/frameworks/base` Android	10:0 up to 10:2021-09-01, plus listed versions 10	10:2021-09-01
`platform/frameworks/opt/telephony` Android	10:0 up to 10:2021-09-01, plus listed versions 10	10:2021-09-01
`platform/frameworks/base` Android	11:0 up to 11:2021-09-01, plus listed versions 11	11:2021-09-01
`platform/frameworks/opt/telephony` Android	11:0 up to 11:2021-09-01, plus listed versions 11	11:2021-09-01

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-2021-0644 is a medium vulnerability (CVSS 5.5) in Google Android, published September 1, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.11%, the 1st percentile. Fixed in platform/frameworks/base 10:2021-09-01.