What is CVE-2021-25354?

CVE-2021-25354 is a low-severity vulnerability in Samsung Internet, classified under Improper Authorization. CVSS score: 3.3/10. Published 2021-03-25.

How severe is CVE-2021-25354?

Low severity. CVSS v3 base score is 3.3 out of 10.

Auth bypass in Samsung Internet

CVE-2021-25354

Improper input check in Samsung Internet prior to version 13.2.1.46 allows attackers to launch non-exported activity in Samsung Browser via malicious deeplink.

Published 2021-03-25 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L.

EPSS exploit prediction

EPSS: 0.005 (37.1th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 37.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Samsung Internet
Samsung Mobile Internet — versions unspecified

Weakness classification (CWE)

CWE-285 — Improper Authorization

References

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

Frequently asked questions

What is CVE-2021-25354?: CVE-2021-25354 is a low-severity vulnerability in Samsung Internet, classified under Improper Authorization. CVSS score: 3.3/10. Published 2021-03-25.
How severe is CVE-2021-25354?: Low severity. CVSS v3 base score is 3.3 out of 10.