NVIDIA TensorRT ONNX File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability

August 24th, 2026
ZDI-26-591 ZDI-CAN-30323

CVE ID

CVE-2026-24272

CVSS Score

7.8 AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Vendors

NVIDIA

Affected Products

TensorRT

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on affected installations of NVIDIA TensorRT. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the parsing of ONNX models. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process.

Additional Details

NVIDIA has issued an update to correct this vulnerability. More details can be found at:
https://nvidia.custhelp.com/app/answers/detail/a_id/5855

Disclosure Timeline

  • 2026-04-15 - Vulnerability reported to vendor
  • 2026-08-24 - Coordinated public release of advisory
  • 2026-08-24 - Advisory Updated

Credit

Seiji Sakurai (@HeapSmasher)

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