What is CVE-2026-21036?

CVE-2026-21036 is a medium-severity vulnerability in Samsung Internet, classified under Incorrect Authorization. CVSS score: 5.5/10. Published 2026-06-05.

How severe is CVE-2026-21036?

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

Auth bypass in Samsung Internet

CVE-2026-21036

Improper authorization in Samsung Internet prior to version 30.0.0.39 allows local attackers to access sensitive information.

Vulnerability class: Broken Access Control

EPSS: 0.001 (0.7th percentile) — read the EPSS interpretation.

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.

Affected products

Samsung Internet
Samsung Mobile Internet — versions 30.0.0.39

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

mobile.security@samsung.com (Vendor Advisory)

Frequently asked questions

What is CVE-2026-21036?: CVE-2026-21036 is a medium-severity vulnerability in Samsung Internet, classified under Incorrect Authorization. CVSS score: 5.5/10. Published 2026-06-05.
How severe is CVE-2026-21036?: Medium severity. CVSS v3 base score is 5.5 out of 10.