CVE-2025-33242
Registry Modification Vulnerability in NVIDIA B300 MCU Causing DoS
Publication date: 2026-03-24
Last updated on: 2026-03-24
Assigner: NVIDIA Corporation
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| nvidia | b300_mcu | * |
| nvidia | b300_mcu | to 1.0 (inc) |
| nvidia | b300_mcu | 1.4 |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-1234 | System configuration protection may be bypassed during debug mode. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
The CVE-2025-33242 vulnerability affects the NVIDIA B300 MCU, specifically the CX8 MCU component. It allows a malicious actor with high privileges to modify unsupported registries within the device. This modification can cause the device to enter a bad state, potentially leading to denial of service and data tampering.
The attack is network-based and requires high attack complexity, but no user interaction is needed. The vulnerability does not impact confidentiality but has high impacts on integrity and availability.
How can this vulnerability impact me? :
Exploiting this vulnerability can lead to denial of service (DoS), where the affected device may become unresponsive or unusable.
It can also result in data tampering, meaning that data integrity can be compromised, potentially altering or corrupting data processed or stored by the device.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
[{'type': 'paragraph', 'content': 'To mitigate the CVE-2025-33242 vulnerability affecting the NVIDIA B300 MCU CX8 component, it is recommended to download and install the latest firmware version 1.4 released by NVIDIA.'}, {'type': 'paragraph', 'content': 'This updated firmware addresses the vulnerability that allows modification of unsupported registries which could cause denial of service and data tampering.'}, {'type': 'paragraph', 'content': "Users should obtain the firmware from the NVIDIA Developer Tools page and follow NVIDIA's official guidance for installation."}] [2]