What is CVE-2023-21427?

CVE-2023-21427 is a medium-severity vulnerability in Samsung Android, classified under Improper Access Control. CVSS score: 5.4/10. Published 2023-02-09.

How severe is CVE-2023-21427?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Vulnerability in Samsung Android

CVE-2023-21427

Improper access control vulnerability in NfcTile prior to SMR Jan-2023 Release 1 allows to attacker to use NFC without user recognition.

Published 2023-02-09 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L.

EPSS exploit prediction

EPSS: 0.003 (15.4th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 15th percentile — 15.4% 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

Samsung Android — versions 11.0, 12.0, 13.0
Samsung Mobile Devices — versions R(11), S(12), T(13)

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

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

Frequently asked questions

What is CVE-2023-21427?: CVE-2023-21427 is a medium-severity vulnerability in Samsung Android, classified under Improper Access Control. CVSS score: 5.4/10. Published 2023-02-09.
How severe is CVE-2023-21427?: Medium severity. CVSS v3 base score is 5.4 out of 10.