What is CVE-2023-40631?

CVE-2023-40631 is a medium-severity vulnerability in Google Android, classified under Missing Authorization. CVSS score: 4.4/10. Published 2023-10-08.

How severe is CVE-2023-40631?

Medium severity. CVSS v3 base score is 4.4 out of 10.

Auth bypass in Google Android

CVE-2023-40631

In Dialer, there is a possible missing permission check. This could lead to local information disclosure with System execution privileges needed

Vulnerability class: Broken Access Control

Published 2023-10-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.001 (0.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 0th percentile — 0.2% 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, 11.0, 12.0
Unisoc S8000
Unisoc Sc7731e
Unisoc Sc9832e
Unisoc Sc9863a
Unisoc T310
Unisoc T606
Unisoc T610
Unisoc T612
Unisoc T616

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

www.unisoc.com/en_us/secy/announcementDetail/https://www.unisoc.com/en_us/secy/… (Vendor Advisory)

Frequently asked questions

What is CVE-2023-40631?: CVE-2023-40631 is a medium-severity vulnerability in Google Android, classified under Missing Authorization. CVSS score: 4.4/10. Published 2023-10-08.
How severe is CVE-2023-40631?: Medium severity. CVSS v3 base score is 4.4 out of 10.