CVE-2026-61766 is a high-severity vulnerability affecting NVIDIA Megatron Bridge. The flaw involves deserialization of untrusted data, which can be exploited by an attacker to achieve remote code execution, tamper with data, and disclose sensitive information. The vulnerability was published via the NVD and NVIDIA's product security advisory. No authentication or user interaction details are specified in the current disclosure. The potential impact is significant given the consequences include code execution and data tampering. NVIDIA has published an advisory on their GitHub product-security repository. Organizations using NVIDIA Megatron Bridge should review the advisory and apply any available patches promptly.