What is CVE-2021-0591?

CVE-2021-0591 is a high-severity vulnerability in Google Android, classified under Externally Controlled Reference to a Resource in Another Sphere. CVSS score: 7.3/10. Published 2021-08-17.

How severe is CVE-2021-0591?

High severity. CVSS v3 base score is 7.3 out of 10.

Is CVE-2021-0591 known to be exploited?

3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Google Android

CVE-2021-0591

In sendReplyIntentToReceiver of BluetoothPermissionActivity.java, there is a possible way to invoke privileged broadcast receivers due to a confused deputy. This could lead to local escalation of privilege with User execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-9 Android-10 Android-11 Android-8.1Android ID: A-179386960

EPSS: 0.004 (30.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H.

Affected products

Google Android — versions 8.1, 9.0, 10.0
N/a Android — versions Android-9 Android-10 Android-11 Android-8.1

Weakness classification (CWE)

CWE-610 — Externally Controlled Reference to a Resource in Another Sphere

Public proof-of-concept exploits

References

security@android.com (Patch, x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2021-0591?: CVE-2021-0591 is a high-severity vulnerability in Google Android, classified under Externally Controlled Reference to a Resource in Another Sphere. CVSS score: 7.3/10. Published 2021-08-17.
How severe is CVE-2021-0591?: High severity. CVSS v3 base score is 7.3 out of 10.
Is CVE-2021-0591 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.