What is CVE-2021-25366?

CVE-2021-25366 is a low-severity vulnerability in Samsung Internet, classified under CWE-703. CVSS score: 3.2/10. Published 2021-03-25.

How severe is CVE-2021-25366?

Low severity. CVSS v3 base score is 3.2 out of 10.

Vulnerability in Samsung Internet

CVE-2021-25366

Improper access control in Samsung Internet prior to version 13.2.1.70 allows physically proximate attackers to bypass the secret mode's authentication.

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

CVSS v3 metric

CVSS v3 base score 3.2 (Low). Vector: CVSS:3.1/AV:P/AC:H/PR:H/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.003 (17.6th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 18th percentile — 17.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Samsung Internet
Samsung Mobile Internet — versions unspecified

Weakness classification (CWE)

CWE-703

References

security.samsungmobile.com/ (Vendor Advisory)
security.samsungmobile.com/serviceWeb.smsb (Not Applicable, Vendor Advisory)

Frequently asked questions

What is CVE-2021-25366?: CVE-2021-25366 is a low-severity vulnerability in Samsung Internet, classified under CWE-703. CVSS score: 3.2/10. Published 2021-03-25.
How severe is CVE-2021-25366?: Low severity. CVSS v3 base score is 3.2 out of 10.