What is CVE-2021-25421?

CVE-2021-25421 is a medium-severity vulnerability in Samsung Galaxy Watch 3 Plugin, classified under CWE-779. CVSS score: 5.5/10. Published 2021-06-11.

How severe is CVE-2021-25421?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Information disclosure in Samsung Galaxy Watch 3 Plugin

CVE-2021-25421

Improper log management vulnerability in Galaxy Watch3 PlugIn prior to version 2.2.09.21033151 allows attacker with log permissions to leak Wi-Fi password connected to the user smartphone within log.

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

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.002 (14.3th percentile), scored 2026-10-20.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 14th percentile — 14.3% 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 Galaxy Watch 3 Plugin
Samsung Mobile Galaxy Watch3 Plugin — versions unspecified

Weakness classification (CWE)

References

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

Frequently asked questions

What is CVE-2021-25421?: CVE-2021-25421 is a medium-severity vulnerability in Samsung Galaxy Watch 3 Plugin, classified under CWE-779. CVSS score: 5.5/10. Published 2021-06-11.
How severe is CVE-2021-25421?: Medium severity. CVSS v3 base score is 5.5 out of 10.