What is CVE-2023-21466?

CVE-2023-21466 is a medium-severity vulnerability in Samsung Android, classified under Improper Authentication. CVSS score: 5.3/10. Published 2025-09-03.

How severe is CVE-2023-21466?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Auth bypass in Samsung Android

CVE-2023-21466

PendingIntent hijacking vulnerability in CertificatePolicy in framework prior to SMR Apr-2023 Release 1 allows local attackers to access contentProvider without proper permission.

Vulnerability class: Broken Authentication

Published 2025-09-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.001 (0.1th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 0th percentile — 0.1% 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

Samsung Android — versions 11.0, 12.0, 13.0
Samsung Mobile Devices — versions SMR Apr-2023 Release in Android 11, 12, 13

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

security.samsungmobile.com/securityUpdate.smsb (Vendor Advisory)

Frequently asked questions

What is CVE-2023-21466?: CVE-2023-21466 is a medium-severity vulnerability in Samsung Android, classified under Improper Authentication. CVSS score: 5.3/10. Published 2025-09-03.
How severe is CVE-2023-21466?: Medium severity. CVSS v3 base score is 5.3 out of 10.