What is CVE-2021-25481?

CVE-2021-25481 is a medium-severity vulnerability in Google Android, classified under Improper Check for Unusual or Exceptional Conditions. CVSS score: 6.4/10. Published 2021-10-06.

How severe is CVE-2021-25481?

Medium severity. CVSS v3 base score is 6.4 out of 10.

Vulnerability in Google Android

CVE-2021-25481

An improper error handling in Exynos CP booting driver prior to SMR Oct-2021 Release 1 allows local attackers to bypass a Secure Memory Protector of Exynos CP Memory.

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

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.001 (0.7th percentile), scored 2026-10-23.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 1st percentile — 0.7% 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 Exynos
Samsung Mobile Devices — versions O(8.1), P(9.0), Q(10.0), R(11.0)

Weakness classification (CWE)

CWE-754 — Improper Check for Unusual or Exceptional Conditions

References

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

Frequently asked questions

What is CVE-2021-25481?: CVE-2021-25481 is a medium-severity vulnerability in Google Android, classified under Improper Check for Unusual or Exceptional Conditions. CVSS score: 6.4/10. Published 2021-10-06.
How severe is CVE-2021-25481?: Medium severity. CVSS v3 base score is 6.4 out of 10.