What is CVE-2021-25406?

CVE-2021-25406 is a medium-severity vulnerability in Samsung Gear S, classified under CWE-922. CVSS score: 6.5/10. Published 2021-06-11.

How severe is CVE-2021-25406?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Auth bypass in Samsung Gear S

CVE-2021-25406

Information exposure vulnerability in Gear S Plugin prior to version 2.2.05.20122441 allows unstrusted applications to access connected BT device information.

Published 2021-06-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.004 (31.4th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 31.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Samsung Gear S
Samsung Mobile Gear S Plugin — versions unspecified

Weakness classification (CWE)

References

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

Frequently asked questions

What is CVE-2021-25406?: CVE-2021-25406 is a medium-severity vulnerability in Samsung Gear S, classified under CWE-922. CVSS score: 6.5/10. Published 2021-06-11.
How severe is CVE-2021-25406?: Medium severity. CVSS v3 base score is 6.5 out of 10.