NVIDIA Patches Critical VIRTIO-Net Flaw in BlueField 3 Allowing VM Code Execution

NVIDIA has released a security update addressing a critical vulnerability in the VIRTIO-Net component used with its BlueField 3 DPU. The flaw, tracked as CVE-2026-65094, enables virtual machine users to execute arbitrary code within the VIRTIO-Net execution context through crafted messages that perform unauthorized memory writes. Originally assigned CVE-2025-33209, the identifier was later withdrawn and replaced. The issue was discovered internally by NVIDIA and carries a CVSS v3.1 base score of 9.0, rated Critical. Affected versions include VIRTIO-Net 25.10.6, 25.10.2, 24.10.50, and 23.10.23, with fixes available in subsequent releases. Organizations are advised to update immediately to mitigate the risk of code execution by untrusted VM tenants.

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NVIDIA has issued a security update to address a critical vulnerability in the VIRTIO-Net component of its BlueField 3 DPU platform.

The flaw, identified as CVE-2026-65094, was disclosed in a security advisory published on July 28, 2026. It stems from improper handling of memory write operations and was discovered internally by the company. The original CVE identifier CVE-2025-33209 was withdrawn and replaced.

According to the advisory, a virtual machine user can exploit the vulnerability by sending specially crafted messages. This allows arbitrary values to be written to arbitrary memory locations, enabling code execution within the VIRTIO-Net execution context.

The vulnerability received a CVSS v3.1 base score of 9.0 and is rated Critical, the highest severity level.

NVIDIA recommends updating to the following fixed versions or later: VIRTIO-Net 25.10.6, 25.10.2, 24.10.50, and 23.10.23.

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