CVE-2023-42559 Security feature bypass in Samsung Mobile Devices

What is CVE-2023-42559?

CVE-2023-42559 is a medium-severity vulnerability in Samsung Android, published on 5 Dec 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

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

Weakness: CWE-755

Which versions are affected by CVE-2023-42559?

It affects 1 product.

Products include Samsung Android.

How do I fix CVE-2023-42559?

No fix has been published for CVE-2023-42559 yet. Limit exposure of the affected software until one is available.

Is CVE-2023-42559 being exploited?

There is no known exploitation of CVE-2023-42559 in the wild and no public exploit code.

Other vulnerabilities in Samsung Android

• CVE-2025-21042 Samsung Mobile Devices Out-of-Bounds Write Exploited High 8.8
• CVE-2025-21043 Samsung Mobile Devices Out-of-Bounds Write Exploited High 8.8
• CVE-2021-25487 Samsung Mobile Devices Out-of-Bounds Read Exploited High 7.3
• CVE-2021-25394 Samsung Mobile Devices Race Condition Exploited Medium 6.4
• CVE-2021-25395 Samsung Mobile Devices Race Condition Exploited Medium 6.4

All Samsung Android vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-655p-cxf7-qpch.