CVE-2021-0319

HIGH

Android 8.0-11 - Incorrect Authorization in CompanionDeviceManagerService

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2021-0319. PoCs published by Satheesh575555.

AI-analyzed exploit summary This repository contains performance test cases for Android's autofill framework, specifically targeting CVE-2021-0319. The code includes test cases for autofill functionality but does not contain an actual exploit. It appears to be part of a performance testing suite rather than an exploit PoC.

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.

Exploits (1)

nomisec WRITEUP
by Satheesh575555 · poc
https://github.com/Satheesh575555/frameworks_base_AOSP10_r33_CVE-2021-0319

This repository contains performance test cases for Android's autofill framework, specifically targeting CVE-2021-0319. The code includes test cases for autofill functionality but does not contain an actual exploit. It appears to be part of a performance testing suite rather than an exploit PoC.

Classification
Writeup 90%
Attack Type
Other
Complexity
Moderate
Reliability
Theoretical
Target: Android Autofill Framework (AOSP 10 r33)
No auth needed
Prerequisites: Android device with autofill framework · Access to performance testing environment
mistral-large-3 · analyzed Feb 18, 2026 Full analysis →

References (1)

Core 1
Core References
Patch, Vendor Advisory x_refsource_confirm
https://source.android.com/security/bulletin/2021-01-01

Scores

CVSS v3 7.3
EPSS 0.0026
EPSS Percentile 17.2%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Details

CWE
CWE-863
Status published
Products (5)
google/android 8.0
google/android 8.1
google/android 9.0
google/android 10.0
google/android 11.0
Published Jan 11, 2021
Tracked Since Feb 18, 2026