What is CVE-2026-21010?

CVE-2026-21010 is a medium-severity vulnerability in Samsung Android, classified under CWE-20 IMPROPER INPUT VALIDATION. CVSS score: 6.6/10. Published 2026-04-13.

How severe is CVE-2026-21010?

Medium severity. CVSS v3 base score is 6.6 out of 10.

Is CVE-2026-21010 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Samsung Android

CVE-2026-21010

Improper input validation in Retail Mode prior to SMR Apr-2026 Release 1 allows local attackers to trigger privileged functions.

EPSS: 0.001 (1.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.6 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Samsung Android — versions 14.0, 15.0, 16.0
Samsung Mobile Devices — versions SMR Apr-2026 Release in Android 14, 15, 16

Public proof-of-concept exploits

George0Papasotiriou/CVE-2026-21010-VoIP-SIP-Digest-Authentication-Replay

References

mobile.security@samsung.com (Vendor Advisory)

Frequently asked questions

What is CVE-2026-21010?: CVE-2026-21010 is a medium-severity vulnerability in Samsung Android, classified under CWE-20 IMPROPER INPUT VALIDATION. CVSS score: 6.6/10. Published 2026-04-13.
How severe is CVE-2026-21010?: Medium severity. CVSS v3 base score is 6.6 out of 10.
Is CVE-2026-21010 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.