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CVE-2021-39749

HighPublished

In WindowManager, there is a possible way to start non-exported and protected activities due to a missing permission check. This could lead to local...

Published: Mar 30, 2022
Updated: Aug 4, 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

0.2%

Low · next 30 days

Percentile: 10.8%
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 WindowManager, there is a possible way to start non-exported and protected activities due to a missing permission check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-12LAndroid ID: A-205996115

Sources

OrganizerTransactionPoC
PoC for CVE-2021-39749, allowing starting arbitrary Activity on Android 12L Beta

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