What is CVE-2021-1022?

CVE-2021-1022 is a high-severity vulnerability in Google Android, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2021-12-15.

How severe is CVE-2021-1022?

High severity. CVSS v3 base score is 7.5 out of 10.

NULL pointer dereference in Google Android

CVE-2021-1022

In btif_in_hf_client_generic_evt of btif_hf_client.cc, there is a possible Bluetooth service crash due to a missing null check. This could lead to remote denial of service with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-12Android ID: A-180420059

Published 2021-12-15 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.007 (53.2th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 53.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Google Android — versions 12.0
Android — versions Android-12

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

source.android.com/security/bulletin/pixel/2021-12-01 (Vendor Advisory)

Frequently asked questions

What is CVE-2021-1022?: CVE-2021-1022 is a high-severity vulnerability in Google Android, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2021-12-15.
How severe is CVE-2021-1022?: High severity. CVSS v3 base score is 7.5 out of 10.