How severe is CVE-2023-42559?

CVE-2023-42559 has a CVSS 3.x base score of 4.9, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity low, and availability none.

Is CVE-2023-42559 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-42559?

CVE-2023-42559 primarily affects Samsung Android. In total, 16 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-42559?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-42559 published?

CVE-2023-42559 was published on 2023-12-05 and last updated on 2026-06-17.

CVE-2023-42559

CVE-2023-42559 is a medium-severity vulnerability in Samsung Android with a CVSS 3.x base score of 4.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-755.

Key facts

Severity: Medium (CVSS 3.x base score 4.9)
EPSS exploit prediction: 0% (24th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-755
Affected product: Samsung Android
Published: 2023-12-05
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is 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.
How severe is CVE-2023-42559?: CVE-2023-42559 has a CVSS 3.x base score of 4.9, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity low, and availability none.
Is CVE-2023-42559 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-42559?: CVE-2023-42559 primarily affects Samsung Android. In total, 16 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-42559?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-42559 published?: CVE-2023-42559 was published on 2023-12-05 and last updated on 2026-06-17.

References

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

Affected products (16)

cpe:2.3:o:samsung:android:*:*:*:*:*:*:*:*
cpe:2.3:o:samsung:android:14.0:-:*:*:*:*:*:*
cpe:2.3:o:samsung:android:14.0:smr-apr-2023-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:14.0:smr-aug-2023-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:14.0:smr-dec-2022-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:14.0:smr-feb-2023-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:14.0:smr-jan-2023-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:14.0:smr-jul-2023-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:14.0:smr-jun-2023-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:14.0:smr-mar-2023-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:14.0:smr-may-2023-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:14.0:smr-nov-2022-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:14.0:smr-nov-2023-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:14.0:smr-oct-2022-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:14.0:smr-oct-2023-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:14.0:smr-sep-2023-r1:*:*:*:*:*:*

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