CVE-2026-47473 is a high-severity vulnerability in NVIDIA TensorRT-LLM characterized by a write-what-where condition (CWE-123). This flaw allows an attacker with local access and high attack complexity to write arbitrary data to arbitrary memory locations without privileges or user interaction. The impact includes potential data tampering, denial of service, and information disclosure. The vulnerability affects version 0.0 of TensorRT-LLM. There is no vendor advisory or patch available at this time, and no known exploits are reported in the wild.

Successful exploitation can lead to high-impact consequences including unauthorized modification of data, disruption of service availability, and leakage of sensitive information. The CVSS v3.1 base score of 7.4 reflects high confidentiality, integrity, and availability impacts. The attack vector requires local access and high attack complexity, with no privileges or user interaction needed.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict local access to trusted users only and monitor for unusual behavior related to TensorRT-LLM. Avoid deploying vulnerable versions in sensitive environments where possible.