NVIDIA Megatron Bridge contains a vulnerability where an attacker could cause a deserialization of untrusted data. A successful exploit of this vulnerability might lead to code execution, data tampering, and information disclosure.

CVE-2026-61774 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, data tampering, and information disclosure. The vulnerability is tracked under NVIDIA's product security advisory and listed in the National Vulnerability Database. No specific exploitation in the wild has been mentioned, but the potential impact is significant given the range of consequences. NVIDIA has published a security advisory on GitHub. Users of NVIDIA Megatron Bridge are advised to review the advisory and apply any available mitigations or patches promptly.