What is CVE-2023-21422?

CVE-2023-21422 is a medium-severity vulnerability in Samsung Android, classified under Improper Authorization. CVSS score: 5.7/10. Published 2023-02-09.

How severe is CVE-2023-21422?

Medium severity. CVSS v3 base score is 5.7 out of 10.

Auth bypass in Samsung Android

CVE-2023-21422

Improper authorization vulnerability in semAddPublicDnsAddr in WifiSevice prior to SMR Jan-2023 Release 1 allows attackers to set custom DNS server without permission via binding WifiService.

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

CVSS v3 metric

CVSS v3 base score 5.7 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:L.

EPSS exploit prediction

EPSS: 0.002 (3.5th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 4th percentile — 3.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

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

Weakness classification (CWE)

References

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

Frequently asked questions

What is CVE-2023-21422?: CVE-2023-21422 is a medium-severity vulnerability in Samsung Android, classified under Improper Authorization. CVSS score: 5.7/10. Published 2023-02-09.
How severe is CVE-2023-21422?: Medium severity. CVSS v3 base score is 5.7 out of 10.