CVE-2025-33242 Other in HGX and DGX B300
A vulnerability in the NVIDIA B300 MCU allows attackers to modify unsupported registries, causing denial of service and data tampering.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-33242?
CVE-2025-33242 is a medium-severity vulnerability in NVIDIA HGX and DGX B300, published on 24 Mar 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
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.
Weakness: CWE-1234
Which versions are affected by CVE-2025-33242?
How do I fix CVE-2025-33242?
No fix has been published for CVE-2025-33242 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-33242 being exploited?
There is no known exploitation of CVE-2025-33242 in the wild and no public exploit code.
Sources
Also known as GHSA-wrfr-265x-gm85.