What is CVE-2021-39794?

CVE-2021-39794 is a high-severity vulnerability in Google Android, classified under Incorrect Default Permissions. CVSS score: 7.8/10. Published 2022-04-12.

How severe is CVE-2021-39794?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Google Android

CVE-2021-39794

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

EPSS: 0.003 (25.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Google Android — versions 11.0, 12.0, 12.1
N/a Android — versions Android-11 Android-12 Android-12L

Weakness classification (CWE)

CWE-276 — Incorrect Default Permissions

References

security@android.com (x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2021-39794?: CVE-2021-39794 is a high-severity vulnerability in Google Android, classified under Incorrect Default Permissions. CVSS score: 7.8/10. Published 2022-04-12.
How severe is CVE-2021-39794?: High severity. CVSS v3 base score is 7.8 out of 10.