What is CVE-2019-9421?

CVE-2019-9421 is a medium-severity vulnerability in Google Android, classified under Out-of-bounds Read. CVSS score: 5.0/10. Published 2019-09-27.

How severe is CVE-2019-9421?

Medium severity. CVSS v3 base score is 5.0 out of 10.

Out-of-bounds Read in Google Android

CVE-2019-9421

In libandroidfw, there is a possible OOB read due to an integer overflow. This could lead to local information disclosure with no additional execution privileges needed. User interaction is needed for exploitation. Product: AndroidVersions: Android-10Android ID: A-111215250

Vulnerability class: Buffer Overflow

Published 2019-09-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.001 (3.0th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 3rd percentile — 3.0% 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 10.0
Android — versions Android-10

Weakness classification (CWE)

References

source.android.com/security/bulletin/android-10 (Vendor Advisory)

Frequently asked questions

What is CVE-2019-9421?: CVE-2019-9421 is a medium-severity vulnerability in Google Android, classified under Out-of-bounds Read. CVSS score: 5.0/10. Published 2019-09-27.
How severe is CVE-2019-9421?: Medium severity. CVSS v3 base score is 5.0 out of 10.