CVE-2021-0306

HIGH

Android 8.0-11 - Unauthenticated Privilege Escalation via Permission Bypass

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2021-0306. PoCs published by nanopathi.

AI-analyzed exploit summary This repository contains performance test cases for Android's autofill framework, specifically targeting CVE-2021-0306 and CVE-2021-0317. The code includes test cases for autofill behavior, but does not contain functional exploit code.

Description

In addAllPermissions of PermissionManagerService.java, there is a possible permissions bypass when upgrading major Android versions which allows an app to gain the android.permission.ACTIVITY_RECOGNITION permission without user confirmation. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Product: Android; Versions: Android-11, Android-8.0, Android-8.1, Android-9, Android-10; Android ID: A-154505240.

Exploits (1)

nomisec WRITEUP
by nanopathi · poc
https://github.com/nanopathi/framework_base_AOSP10_r33_CVE-2021-0306_CVE-2021-0317

This repository contains performance test cases for Android's autofill framework, specifically targeting CVE-2021-0306 and CVE-2021-0317. The code includes test cases for autofill behavior, but does not contain functional exploit code.

Classification
Writeup 90%
Attack Type
Other
Complexity
Moderate
Reliability
Theoretical
Target: Android Open Source Project (AOSP) 10
No auth needed
Prerequisites: Android device with autofill framework
devstral-2 · analyzed Feb 18, 2026 Full analysis →

References (1)

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

Scores

CVSS v3 7.8
EPSS 0.0026
EPSS Percentile 17.0%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-269
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