What is CVE-2021-25347?

CVE-2021-25347 is a medium-severity vulnerability in Google Android, classified under Improper Authentication. CVSS score: 5.3/10. Published 2021-03-04.

How severe is CVE-2021-25347?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Auth bypass in Google Android

CVE-2021-25347

Hijacking vulnerability in Samsung Email application version prior to SMR Feb-2021 Release 1 allows attackers to intercept when the provider is executed.

Vulnerability class: Broken Authentication

Published 2021-03-04 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.001 (1.5th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 2nd percentile — 1.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: +0.000

Affected products

Google Android — versions 9.0, 10.0, 11.0
Samsung Mobile Devices — versions P(9.0), Q(10.0), R(11.0)

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

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

Frequently asked questions

What is CVE-2021-25347?: CVE-2021-25347 is a medium-severity vulnerability in Google Android, classified under Improper Authentication. CVSS score: 5.3/10. Published 2021-03-04.
How severe is CVE-2021-25347?: Medium severity. CVSS v3 base score is 5.3 out of 10.