CVE-2023-30738

An improper input validation in UEFI Firmware prior to Firmware update Oct-2023 Release in Galaxy...

5.5 Medium

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.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

0.17%Up 0.1 points since Oct 4, 2023

What each source reports

CVE List Score used 5.5

Record: CVE-2023-30738
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

EUVDEUVD-2023-35102 5.5

Record: EUVD-2023-35102
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-03

GitHub AdvisoriesGHSA-55g9-6jp7-g68x 5.5

An improper input validation in UEFI Firmware prior to Firmware update Oct-2023 Release in Galaxy...

Record: GHSA-55g9-6jp7-g68x
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-20
Updated: 2026-11-02

NVD 5.5

Record: CVE-2023-30738
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

Affected products

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases, published	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2023-30738 is a medium vulnerability (CVSS 5.5) in Samsung Mobile Galaxy Book, Galaxy Book Pro, Galaxy Book Pro 360 And Galaxy Book Odyssey, published October 4, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.17%, the 6th percentile. No source names a fixed version.