What is CVE-2021-39742?

CVE-2021-39742 is a medium-severity vulnerability in Google Android, classified under Missing Authorization. CVSS score: 5.5/10. Published 2022-03-30.

How severe is CVE-2021-39742?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Auth bypass in Google Android

CVE-2021-39742

In Voicemail, there is a possible way to retrieve a trackable identifier due to a missing permission check. This could lead to local information disclosure with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-12LAndroid ID: A-186405602

Vulnerability class: Broken Access Control

Published 2022-03-30 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.003 (22.2th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 22.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Google Android — versions 12.1
Android — versions Android-12L

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

source.android.com/security/bulletin/android-12l (Vendor Advisory)

Frequently asked questions

What is CVE-2021-39742?: CVE-2021-39742 is a medium-severity vulnerability in Google Android, classified under Missing Authorization. CVSS score: 5.5/10. Published 2022-03-30.
How severe is CVE-2021-39742?: Medium severity. CVSS v3 base score is 5.5 out of 10.