What is CVE-2021-25453?

CVE-2021-25453 is a medium-severity vulnerability in Google Android, classified under Improper Input Validation. CVSS score: 5.1/10. Published 2021-09-09.

How severe is CVE-2021-25453?

Medium severity. CVSS v3 base score is 5.1 out of 10.

Improper input validation in Google Android

CVE-2021-25453

Some improper access control in Bluetooth APIs prior to SMR Sep-2021 Release 1 allows untrusted application to get Bluetooth information.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2021-09-09 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.1 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.001 (1.0th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 1st percentile — 1.0% 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 8.1, 9.0, 10.0
Samsung Mobile Devices — versions O(8.1), P(9.0), Q(10.0), R(11.0)

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

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

Frequently asked questions

What is CVE-2021-25453?: CVE-2021-25453 is a medium-severity vulnerability in Google Android, classified under Improper Input Validation. CVSS score: 5.1/10. Published 2021-09-09.
How severe is CVE-2021-25453?: Medium severity. CVSS v3 base score is 5.1 out of 10.