What is CVE-2023-42564?

CVE-2023-42564 is a medium-severity vulnerability in Samsung Android, classified under CWE-284 IMPROPER ACCESS CONTROL. CVSS score: 6.6/10. Published 2023-12-05.

How severe is CVE-2023-42564?

Medium severity. CVSS v3 base score is 6.6 out of 10.

Vulnerability in Samsung Android

CVE-2023-42564

Improper access control in knoxcustom service prior to SMR Dec-2023 Release 1 allows attacker to send broadcast with system privilege.

Published 2023-12-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.6 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:H.

EPSS exploit prediction

EPSS: 0.002 (9.0th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 9th percentile — 9.0% 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 14.0
Samsung Mobile Devices — versions SMR Dec-2023 Release in Android 11, 12, 13, 14

References

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

Frequently asked questions

What is CVE-2023-42564?: CVE-2023-42564 is a medium-severity vulnerability in Samsung Android, classified under CWE-284 IMPROPER ACCESS CONTROL. CVSS score: 6.6/10. Published 2023-12-05.
How severe is CVE-2023-42564?: Medium severity. CVSS v3 base score is 6.6 out of 10.