CVE-2025-33255 Deserialization in TensorRT-LLM
An attacker can exploit unsafe deserialization in the MPI server to execute code, cause denial of service, tamper with data, or disclose information.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-33255?
CVE-2025-33255 is a high-severity unsafe deserialization vulnerability in NVIDIA TensorRT-LLM, published on 20 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
NVIDIA TRT-LLM for any platform contains a vulnerability in MPI server, where an attacker could cause an unsafe deserialization. A successful exploit of this vulnerability might lead to code execution, denial of service, data tampering, and information disclosure.
Weakness: CWE-502
Which versions are affected by CVE-2025-33255?
It affects 1 product.
Products include Nvidia Tensorrt Llm.
How do I fix CVE-2025-33255?
No fix has been published for CVE-2025-33255 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2025-33255 being exploited?
There is no known exploitation of CVE-2025-33255 in the wild and no public exploit code.
Other vulnerabilities in NVIDIA TensorRT-LLM
Sources
Also known as GHSA-gvr5-23jj-pf9p.