Medium 5.9Published Mar 24, 2026

CVE-2025-33242NVIDIA B300 MCU contains a vulnerability in the CX8 MCU that could allow a malicious actor to modify unsupported registries, causing a bad state.

Updated under an hour ago (Oct 26, 2026, 7:40 AM ET)

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It affects NVIDIA HGX and DGX B300. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for NVIDIA HGX and DGX B300

Exploited in the last 30 days

NVIDIA B300 MCU contains a vulnerability in the CX8 MCU that could allow a malicious actor to modify unsupported registries, causing a bad state. A successful exploit of this vulnerability might lead to denial of service and data tampering.

CVSS: 5.9 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:H
Weakness (CWE): CWE-1234
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: nvidia
NVD analysis: Awaiting Analysis
Record last updated: Mar 24, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

NVIDIA HGX and DGX B300 nvidia:hgx_and_dgx_b300 (from the name)	All versions prior to and including 1.0	CNA record

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.