CVE-2021-39794

Name: CVE-2021-39794
Creator: NVD / NIST
Published: 2022-04-12T17:15:08.08+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.32%

Last modified Jun 17, 2026

CVE-2021-39794 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. In broadcastPortInfo of AdbService.java, there is a possible way for apps to run code as the shell user, if wireless debugging is enabled, due to a missing permission check. This could lead to local escalation of privilege with no additional execution privileges needed. EPSS estimates a 0.32% chance of exploitation in the next 30 days.

Description

In broadcastPortInfo of AdbService.java, there is a possible way for apps to run code as the shell user, if wireless debugging is enabled, due to a missing permission check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-11 Android-12 Android-12LAndroid ID: A-205836329

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

0.32%

24.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-276

Affected Software

Vendor	Product	Versions
Google	Android	11.0
Google	Android	12.0
Google	Android	12.1

References

https://source.android.com/security/bulletin/2022-04-01Vendor Advisory
https://source.android.com/security/bulletin/2022-04-01Vendor Advisory

Timeline

Published: Apr 12, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-39794?

How severe is CVE-2021-39794?

CVE-2021-39794 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.32% probability of exploitation in the next 30 days.

How do I fix CVE-2021-39794?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-39794?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST