What is CVE-2021-25491?

CVE-2021-25491 is a low-severity vulnerability in Google Android, classified under NULL Pointer Dereference. CVSS score: 2.3/10. Published 2021-10-06.

How severe is CVE-2021-25491?

Low severity. CVSS v3 base score is 2.3 out of 10.

NULL pointer dereference in Google Android

CVE-2021-25491

A vulnerability in mfc driver prior to SMR Oct-2021 Release 1 allows memory corruption via NULL-pointer dereference.

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

CVSS v3 metric

CVSS v3 base score 2.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L.

EPSS exploit prediction

EPSS: 0.001 (0.9th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 1st percentile — 0.9% 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 P(9.0), Q(10.0), R(11.0)

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

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

Frequently asked questions

What is CVE-2021-25491?: CVE-2021-25491 is a low-severity vulnerability in Google Android, classified under NULL Pointer Dereference. CVSS score: 2.3/10. Published 2021-10-06.
How severe is CVE-2021-25491?: Low severity. CVSS v3 base score is 2.3 out of 10.