Auth bypass in Google Android

CVE-2021-39799

In AttributionSource of AttributionSource.java, there is a possible permission bypass due to improper input validation. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-12 Android-12LAndroid ID: A-200288596

Vulnerability class: Broken Access Control

Published · last modified .

CVSS v3 metric

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

EPSS exploit prediction

EPSS: 0.001 (1.7th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 2nd percentile — 1.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2021-39799: held from 0.001 to 0.001.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: 0.000

Affected products

  • Google Android — versions 12.0, 12.1
  • Android — versions Android-12 Android-12L

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2021-39799?
CVE-2021-39799 is a high-severity vulnerability in Google Android, classified under Incorrect Authorization. CVSS score: 7.8/10. Published 2022-04-12.
How severe is CVE-2021-39799?
High severity. CVSS v3 base score is 7.8 out of 10.