What is CVE-2023-42559?

CVE-2023-42559 is a medium-severity vulnerability in Samsung Android, classified under Improper Handling of Exceptional Conditions. CVSS score: 4.9/10. Published 2023-12-05.

How severe is CVE-2023-42559?

Medium severity. CVSS v3 base score is 4.9 out of 10.

Vulnerability in Samsung Android

CVE-2023-42559

Improper exception management vulnerability in Knox Guard prior to SMR Dec-2023 Release 1 allows Knox Guard lock bypass via changing system time.

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

CVSS v3 metric

CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N.

EPSS exploit prediction

EPSS: 0.003 (22.8th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 22.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Samsung Android — versions 14.0
Samsung Mobile Devices — versions SMR Dec-2023 Release in Android 11, 12, 13, 14

Weakness classification (CWE)

CWE-755 — Improper Handling of Exceptional Conditions

References

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

Frequently asked questions

What is CVE-2023-42559?: CVE-2023-42559 is a medium-severity vulnerability in Samsung Android, classified under Improper Handling of Exceptional Conditions. CVSS score: 4.9/10. Published 2023-12-05.
How severe is CVE-2023-42559?: Medium severity. CVSS v3 base score is 4.9 out of 10.