CVE-2021-39808

HIGH

Android - Local Privilege Escalation via Notification Channel Group Input Validation

Title source: llm
STIX 2.1

Description

In createNotificationChannelGroup of PreferencesHelper.java, there is a possible way for a service to run in foreground without user notification due to improper input validation. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10 Android-11 Android-12Android ID: A-209966086

References (1)

Core 1
Core References
Patch, Vendor Advisory x_refsource_misc
https://source.android.com/security/bulletin/2022-04-01

Scores

CVSS v3 7.8
EPSS 0.0010
EPSS Percentile 1.2%
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-862
Status published
Products (3)
google/android 10.0
google/android 11.0
google/android 12.0
Published Apr 12, 2022
Tracked Since Feb 18, 2026