NVIDIA TensorRT-LLM up to 1.3.0 Tensor Deserialization heap-based overflow

Summaryinfo

A vulnerability was found in NVIDIA TensorRT-LLM up to 1.3.0. It has been rated as very critical. Affected by this issue is some unknown functionality of the component Tensor Deserialization. The manipulation leads to heap-based overflow. This vulnerability is uniquely identified as CVE-2026-47471. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability, which was classified as very critical, has been found in NVIDIA TensorRT-LLM up to 1.3.0. This issue affects an unknown function of the component Tensor Deserialization. The manipulation with an unknown input leads to a heap-based overflow vulnerability. Using CWE to declare the problem leads to CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). Impacted is confidentiality, integrity, and availability. The summary by CVE is:

NVIDIA TensorRT-LLM for any platform contains a vulnerability in tensor deserialization, where an attacker could cause a heap based buffer overflow. A successful exploit of this vulnerability might lead to information disclosure, data tampering, or denial of service.

The identification of this vulnerability is CVE-2026-47471 since 05/19/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/15/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• Artificial Intelligence Software

Vendor

• NVIDIA

Name

• TensorRT-LLM

Version

• 1.0
• 1.1
• 1.2
• 1.3.0

License

• commercial

Website

• Vendor: https://www.nvidia.com/

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