What’s Vulnerable › Vulnerabilities

CVE-2023-42559

• Severity: medium (CVSS 5.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-12-05 · updated 2026-06-17
• Weakness: CWE-755

Description

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

Affected products

• Samsung Android: from 11.0 before 14.0; 14.0, 14.0-smr-apr-2023-r1, 14.0-smr-aug-2023-r1, 14.0-smr-dec-2022-r1, 14.0-smr-feb-2023-r1, 14.0-smr-jan-2023-r1 (+9) — fixed in 14.0

How to fix

Upgrade to a fixed version: Samsung Android 14.0. Check the vendor advisory for mitigations.

References

• https://security.samsungmobile.com/securityUpdate.smsb?year=2023&month=12
• https://security.samsungmobile.com/securityUpdate.smsb?year=2023&month=12

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