What is CVE-2026-21073?

CVE-2026-21073 is a medium-severity vulnerability in Samsung Android, classified under CWE-20: IMPROPER INPUT VALIDATION. CVSS score: 6.1/10. Published 2026-08-10.

How severe is CVE-2026-21073?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Vulnerability in Samsung Android

CVE-2026-21073

Improper input validation in Galaxy Themes prior to SMR Aug-2026 Release 1 allows physical attackers to launch arbitrary activity.

Published 2026-08-10 · last modified 2026-08-19.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.002 (5.0th percentile), scored 2026-09-24.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 5th percentile — 5.0% 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 14.0, 15.0, 16.0
Samsung Mobile Devices — versions SMR Aug-2026 Release in Android 14, 15, 16

References

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

Frequently asked questions

What is CVE-2026-21073?: CVE-2026-21073 is a medium-severity vulnerability in Samsung Android, classified under CWE-20: IMPROPER INPUT VALIDATION. CVSS score: 6.1/10. Published 2026-08-10.
How severe is CVE-2026-21073?: Medium severity. CVSS v3 base score is 6.1 out of 10.