What is the CVSS score of CVE-2024-38433?

CVE-2024-38433 has a CVSS 3.1 base score of 6.7 (Medium). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.2%.

Npcm750R Firmware CVE-2024-38433

MEDIUM

Authentication Bypass by Primary Weakness (CWE-305)

2024-07-11 cna@cyber.gov.il

Authentication Bypass RCE Npcm750R Firmware Npcm710R Firmware Npcm730R Firmware Npcm705R Firmware

6.7

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

6.7 MEDIUM

AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Jul 11, 2024 - 08:15 nvd

MEDIUM 6.7

DescriptionNVD

Nuvoton - CWE-305: Authentication Bypass by Primary Weakness

An attacker with write access to the SPI-Flash on an NPCM7xx BMC subsystem that uses the Nuvoton BootBlock

reference code can modify the u-boot image header on flash parsed by the BootBlock which could lead to arbitrary code

execution.

AnalysisAI

Nuvoton - CWE-305: Authentication Bypass by Primary Weakness An attacker with write access to the SPI-Flash on an NPCM7xx BMC subsystem that uses the Nuvoton BootBlock reference code can modify the. Rated medium severity (CVSS 6.7), this vulnerability is low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-305. Nuvoton - CWE-305: Authentication Bypass by Primary Weakness An attacker with write access to the SPI-Flash on an NPCM7xx BMC subsystem that uses the Nuvoton BootBlock reference code can modify the u-boot image header on flash parsed by the BootBlock which could lead to arbitrary code execution. Affected products include: Nuvoton Npcm750R Firmware, Nuvoton Npcm710R Firmware, Nuvoton Npcm730R Firmware, Nuvoton Npcm705R Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.