What is CVE-2023-42531?

CVE-2023-42531 is a medium-severity vulnerability in Samsung Android, classified under Improper Authentication. CVSS score: 6.2/10. Published 2023-11-07.

How severe is CVE-2023-42531?

Medium severity. CVSS v3 base score is 6.2 out of 10.

Auth bypass in Samsung Android

CVE-2023-42531

Improper access control vulnerability in SmsController prior to SMR Nov-2023 Release1 allows local attackers to bypass restrictions on starting activities from the background.

Vulnerability class: Broken Authentication

Published 2023-11-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.002 (7.0th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 7th percentile — 7.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Samsung Android — versions 11.0, 12.0, 13.0
Samsung Mobile Devices — versions SMR Nov-2023 Release in Android 11, 12, 13

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

security.samsungmobile.com/securityUpdate.smsb (Vendor Advisory)

Frequently asked questions

What is CVE-2023-42531?: CVE-2023-42531 is a medium-severity vulnerability in Samsung Android, classified under Improper Authentication. CVSS score: 6.2/10. Published 2023-11-07.
How severe is CVE-2023-42531?: Medium severity. CVSS v3 base score is 6.2 out of 10.