CVE-2021-0319

Name: CVE-2021-0319
Creator: NVD / NIST
Published: 2021-01-11T22:15:13.643+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.3/10EPSS 0.26%

Last modified Jun 17, 2026

CVE-2021-0319 is a high-severity vulnerability rated 7.3/10 on the CVSS scale. In checkCallerIsSystemOr of CompanionDeviceManagerService.java, there is a possible way to get a nearby Bluetooth device's MAC address without appropriate permissions due to a permissions bypass. This could lead to local escalation of privilege that grants access to nearby MAC addresses, with User execution privileges needed. EPSS estimates a 0.26% chance of exploitation in the next 30 days.

Description

In checkCallerIsSystemOr of CompanionDeviceManagerService.java, there is a possible way to get a nearby Bluetooth device's MAC address without appropriate permissions due to a permissions bypass. This could lead to local escalation of privilege that grants access to nearby MAC addresses, with User execution privileges needed. User interaction is needed for exploitation. Product: Android; Versions: Android-8.0, Android-8.1, Android-9, Android-10, Android-11; Android ID: A-167244818.

Metrics

CVSS 3.1

7.3/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

0.26%

16.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-863

Affected Software

Vendor	Product	Versions
Google	Android	8.0
Google	Android	8.1
Google	Android	9.0
Google	Android	10.0
Google	Android	11.0

References

https://source.android.com/security/bulletin/2021-01-01Patch, Vendor Advisory
https://source.android.com/security/bulletin/2021-01-01Patch, Vendor Advisory

Timeline

Published: Jan 11, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-0319?

How severe is CVE-2021-0319?

CVE-2021-0319 has a CVSS score of 7.3/10 (HIGH severity). The EPSS model estimates a 0.26% probability of exploitation in the next 30 days.

How do I fix CVE-2021-0319?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-0319?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST