CVE-2023-20921

HIGH

Android - Local Privilege Escalation via AccessibilityManagerService Logic Error

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2023-20921. PoCs published by Trinadh465.

AI-analyzed exploit summary This repository contains a proof-of-concept exploit for CVE-2023-20921, targeting Android's ActivityManager service. The exploit appears to leverage a vulnerability in the `am` command to achieve privilege escalation or unauthorized operations.

Description

In onPackageRemoved of AccessibilityManagerService.java, there is a possibility to automatically grant accessibility services due to a logic error in the code. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-10 Android-11 Android-12 Android-12L Android-13Android ID: A-243378132

Exploits (1)

nomisec WORKING POC
by Trinadh465 · poc
https://github.com/Trinadh465/frameworks_base_android-6.0.1_r22_CVE-2023-20921

This repository contains a proof-of-concept exploit for CVE-2023-20921, targeting Android's ActivityManager service. The exploit appears to leverage a vulnerability in the `am` command to achieve privilege escalation or unauthorized operations.

Classification
Working Poc 80%
Attack Type
Lpe
Complexity
Moderate
Reliability
Reliable
Target: Android (versions affected by CVE-2023-20921)
No auth needed
Prerequisites: Access to an affected Android device · Ability to execute commands via ADB or similar
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (1)

Core 1

Scores

CVSS v3 7.3
EPSS 0.0027
EPSS Percentile 18.7%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-670
Status published
Products (5)
google/android 10.0
google/android 11.0
google/android 12.0
google/android 12.1
google/android 13.0
Published Jan 26, 2023
Tracked Since Feb 18, 2026