What is CVE-2021-39671?

CVE-2021-39671 is a medium-severity vulnerability in Google Android, classified under Use of Uninitialized Resource. CVSS score: 6.5/10. Published 2022-02-11.

How severe is CVE-2021-39671?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Google Android

CVE-2021-39671

In code generated by aidl_const_expressions.cpp, there is a possible out of bounds read due to uninitialized data. This could lead to information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-12Android ID: A-206718630

Published 2022-02-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.005 (39.7th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 39.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Google Android — versions 12.0
Android — versions Android-12

Weakness classification (CWE)

CWE-908 — Use of Uninitialized Resource

References

source.android.com/security/bulletin/2022-02-01 (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2021-39671?: CVE-2021-39671 is a medium-severity vulnerability in Google Android, classified under Use of Uninitialized Resource. CVSS score: 6.5/10. Published 2022-02-11.
How severe is CVE-2021-39671?: Medium severity. CVSS v3 base score is 6.5 out of 10.