What is CVE-2021-0691?

CVE-2021-0691 is a medium-severity vulnerability in Google Android, classified under Improper Privilege Management. CVSS score: 6.7/10. Published 2021-10-06.

How severe is CVE-2021-0691?

Medium severity. CVSS v3 base score is 6.7 out of 10.

Privilege escalation in Google Android

CVE-2021-0691

In the SELinux policy configured in system_app.te, there is a possible way for system_app to gain code execution in other processes due to an overly-permissive SELinux policy. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11Android ID: A-188554048

Vulnerability class: Privilege Escalation

Published 2021-10-06 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.001 (1.3th percentile), scored 2026-10-07.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 1st percentile — 1.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

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

Affected products

Google Android — versions 11.0
Android — versions Android-11

Weakness classification (CWE)

CWE-269 — Improper Privilege Management

References

source.android.com/security/bulletin/2021-09-01 (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2021-0691?: CVE-2021-0691 is a medium-severity vulnerability in Google Android, classified under Improper Privilege Management. CVSS score: 6.7/10. Published 2021-10-06.
How severe is CVE-2021-0691?: Medium severity. CVSS v3 base score is 6.7 out of 10.