CVE-2024-38433
Nuvoton - CWE-305: Authentication Bypass by Primary Weakness
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.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- High
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Nuvoton - CWE-305: Authentication Bypass by Primary Weakness
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.
- Record
CVE-2024-38433- CVSS 3.1
- 6.7 Medium
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-305
- Updated
- 2026-11-02
EUVDEUVD-2024-37325
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.
- Record
EUVD-2024-37325- CVSS 3.1
- 6.7 Medium
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-jx2p-c252-qcmr
Nuvoton - CWE-305: Authentication Bypass by Primary Weakness An attacker with write access to...
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.
- Record
GHSA-jx2p-c252-qcmr- CVSS 3.1
- 6.7 Medium
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-287, CWE-305
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2024-38433- CVSS 3.1
- 6.7 Medium
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-305, CWE-287
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2024-38433 is a medium vulnerability (CVSS 6.7) in Nuvoton Npcm705r Firmware, published July 11, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.20%, the 9th percentile. No source names a fixed version.