Denial of Service and Data Tampering Vulnerability in NVIDIA B300 MCU
CVE-2025-33242

5.9MEDIUM

Key Information:

Vendor

Nvidia
Status
Hgx And Dgx B300
Vendor
CVE Published:
24 March 2026

What is CVE-2025-33242?

The NVIDIA B300 MCU has a vulnerability within the CX8 MCU that allows unauthorized modification of unsupported registries. This could enable malicious actors to exploit the vulnerability, potentially leading to denial of service scenarios and resulting in data integrity issues.

Affected Version(s)

HGX and DGX B300 CX8 MCU All versions prior to and including 1.0

References

https://nvd.nist.gov/vuln/detail/CVE-2025-33242
https://www.cve.org/CVERecord?id=CVE-2025-33242
https://nvidia.custhelp.com/app/answers/detail/a_id/5768

CVSS V3.1

Score:
5.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.