CVE-2023-42559

MEDIUMNVD 4.94.9—

4.9

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

CVSS v3: 4.9
EG Score: 4.9(medium)
EPSS: 13.9%
KEV: Not listed

Published

December 5, 2023

Last Modified

November 21, 2024

References (2)

mobilehttps://security.samsungmobile.com/securityUpdate.smsb?year=2023&month=12
af854a3a-2127-422b-91ae-364da2661108https://security.samsungmobile.com/securityUpdate.smsb?year=2023&month=12

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-755Improper Handling of Exceptional Conditions

Data Freshness Timeline

(refreshed 9× in last 7d / 9× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-24 12:46 UTCEG score recompute
2026-05-24 12:46 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2023-42559?

CVE-2023-42559 is a medium vulnerability published on December 5, 2023. Improper exception management vulnerability in Knox Guard prior to SMR Dec-2023 Release 1 allows Knox Guard lock bypass via changing system time.

When was CVE-2023-42559 disclosed?

CVE-2023-42559 was first published in the National Vulnerability Database on December 5, 2023, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-42559 actively exploited?

CVE-2023-42559 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 13.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-42559?

CVE-2023-42559 has a CVSS v3 base score of 4.9 (NVD).

How do I remediate CVE-2023-42559?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-42559, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2023-42559

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Is Your Infrastructure Affected by CVE-2023-42559?

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CVE-2023-42559

📅 Published

🔄 Last Modified

🔗 References (2)