What is CVE-2021-25470?

CVE-2021-25470 is a high-severity vulnerability in Google Android, classified under Code Injection. CVSS score: 7.9/10. Published 2021-10-06.

How severe is CVE-2021-25470?

High severity. CVSS v3 base score is 7.9 out of 10.

RCE in Google Android

CVE-2021-25470

An improper caller check logic of SMC call in TEEGRIS secure OS prior to SMR Oct-2021 Release 1 can be used to compromise TEE.

Vulnerability class: RCE (Remote Code Execution)

Published 2021-10-06 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.9 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.001 (1.8th percentile), scored 2026-10-24.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 2nd percentile — 1.8% 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 Exynos
Samsung Mobile Devices — versions Select P(9.0), Q(10.0), R(11.0) devices with Exynos and Mediatek chipsets

Weakness classification (CWE)

CWE-94 — Code Injection

References

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

Frequently asked questions

What is CVE-2021-25470?: CVE-2021-25470 is a high-severity vulnerability in Google Android, classified under Code Injection. CVSS score: 7.9/10. Published 2021-10-06.
How severe is CVE-2021-25470?: High severity. CVSS v3 base score is 7.9 out of 10.