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CVE-2023-20921

HighPublished

In onPackageRemoved of AccessibilityManagerService.java, there is a possibility to automatically grant accessibility services due to a logic error in the...

Published: Jan 24, 2023
Updated: Apr 2, 2025
Assigning CNA: google_android
Evidence observed: Aug 8, 2026

Primary CVSS

7.3/ 10High

nvd · CVSS 3.1

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

EPSS probability estimate

0.3%

Low · next 30 days

Percentile: 19.8%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

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

Sources

frameworks_base_android-6.0.1_r22_CVE-2023-20921Patch
Android framework base repository for Android 6.0.1 r22, modified to address CVE-2023-20921, providing a patched version for security analysis and vulnerability research.

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