What is CVE-2021-0673?

CVE-2021-0673 is a high-severity vulnerability in Google Android, classified under Missing Authorization. CVSS score: 7.8/10. Published 2021-12-17.

How severe is CVE-2021-0673?

High severity. CVSS v3 base score is 7.8 out of 10.

Auth bypass in Google Android

CVE-2021-0673

In Audio Aurisys HAL, there is a possible permission bypass due to a missing permission check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS05977326; Issue ID: ALPS05977326.

Vulnerability class: Broken Access Control

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

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.007 (50.1th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 50.1% 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 10.0, 11.0, 12.0
Mediatek Mt6779
Mediatek Mt6781
Mediatek Mt6785
Mediatek Mt6853
Mediatek Mt6853t
Mediatek Mt6873
Mediatek Mt6875
Mediatek Mt6877
Mediatek Mt6883

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

corp.mediatek.com/product-security-bulletin/December-2021 (Vendor Advisory)

Frequently asked questions

What is CVE-2021-0673?: CVE-2021-0673 is a high-severity vulnerability in Google Android, classified under Missing Authorization. CVSS score: 7.8/10. Published 2021-12-17.
How severe is CVE-2021-0673?: High severity. CVSS v3 base score is 7.8 out of 10.