What is CVE-2021-25512?

CVE-2021-25512 is a medium-severity vulnerability in Google Android, classified under Improper Input Validation. CVSS score: 6.1/10. Published 2021-12-08.

How severe is CVE-2021-25512?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Improper input validation in Google Android

CVE-2021-25512

An improper validation vulnerability in telephony prior to SMR Dec-2021 Release 1 allows attackers to launch certain activities.

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

Published 2021-12-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.001 (1.0th percentile), scored 2026-10-03.

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 9.0, 10.0, 11.0
Samsung Mobile Devices — versions 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-2021-25512?: CVE-2021-25512 is a medium-severity vulnerability in Google Android, classified under Improper Input Validation. CVSS score: 6.1/10. Published 2021-12-08.
How severe is CVE-2021-25512?: Medium severity. CVSS v3 base score is 6.1 out of 10.