How severe is CVE-2023-30738?

CVE-2023-30738 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2023-30738 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-30738?

CVE-2023-30738 primarily affects Samsung Galaxy Book Firmware. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-30738?

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

When was CVE-2023-30738 published?

CVE-2023-30738 was published on 2023-10-04 and last updated on 2026-06-17.

CVE-2023-30738

CVE-2023-30738 is a medium-severity vulnerability in Samsung Galaxy Book Firmware with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
EPSS exploit prediction: 0% (6th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Samsung Galaxy Book Firmware
Published: 2023-10-04
Last modified: 2026-06-17

Description

An improper input validation in UEFI Firmware prior to Firmware update Oct-2023 Release in Galaxy Book, Galaxy Book Pro, Galaxy Book Pro 360 and Galaxy Book Odyssey allows local attacker to execute SMM memory corruption.

Frequently asked questions

What is CVE-2023-30738?: An improper input validation in UEFI Firmware prior to Firmware update Oct-2023 Release in Galaxy Book, Galaxy Book Pro, Galaxy Book Pro 360 and Galaxy Book Odyssey allows local attacker to execute SMM memory corruption.
How severe is CVE-2023-30738?: CVE-2023-30738 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2023-30738 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-30738?: CVE-2023-30738 primarily affects Samsung Galaxy Book Firmware. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-30738?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-30738 published?: CVE-2023-30738 was published on 2023-10-04 and last updated on 2026-06-17.

References

https://security.samsungmobile.com/serviceWeb.smsb?year=2023&month=10

Affected products (4)

cpe:2.3:o:samsung:galaxy_book_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:samsung:galaxy_book_pro_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:samsung:galaxy_book_pro_360_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:samsung:galaxy_book_odyssey_firmware:*:*:*:*:*:*:*:*