What is CVE-2023-21467?

CVE-2023-21467 is a medium-severity vulnerability in Samsung Exynos, classified under Improper Authentication. CVSS score: 4.6/10. Published 2025-09-03.

How severe is CVE-2023-21467?

Medium severity. CVSS v3 base score is 4.6 out of 10.

Auth bypass in Samsung Exynos

CVE-2023-21467

Error in 3GPP specification implementation in Exynos baseband prior to SMR Apr-2023 Release 1 allows incorrect handling of unencrypted message.

Vulnerability class: Broken Authentication

EPSS: 0.003 (20.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.6 (Medium). Vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L.

Affected products

Samsung Exynos
Samsung Mobile Devices — versions SMR Apr-2023 Release in Select devices using Exynos chipsets

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

mobile.security@samsung.com (Vendor Advisory)

Frequently asked questions

What is CVE-2023-21467?: CVE-2023-21467 is a medium-severity vulnerability in Samsung Exynos, classified under Improper Authentication. CVSS score: 4.6/10. Published 2025-09-03.
How severe is CVE-2023-21467?: Medium severity. CVSS v3 base score is 4.6 out of 10.