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CVE-2021-0705

HighPublished

In sanitizeSbn of NotificationManagerService.java, there is a possible way to keep service running in foreground and keep granted permissions due to Bypass...

Published: Oct 22, 2021
Updated: Aug 3, 2024
Assigning CNA: google_android
Evidence observed: Aug 25, 2026

Primary CVSS

7.8/ 10High

nvd · CVSS 3.1

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

EPSS probability estimate

0.3%

Low · next 30 days

Percentile: 17.9%
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 sanitizeSbn of NotificationManagerService.java, there is a possible way to keep service running in foreground and keep granted permissions due to Bypass of Background Service Restrictions. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11 Android-10Android ID: A-185388103

Sources

frameworks_base_AOSP10_r33_CVE-2021-0705Research
Android framework base repository modified to address CVE-2021-0705, providing a patched or vulnerable version for security research and exploitation testing.
frameworks_base_AOSP10_r33_CVE-2021-0705Patch
Android framework patch for CVE-2021-0705, addressing a privilege escalation vulnerability in the Android operating system.

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