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-2026-61773 affects NVIDIA Megatron Bridge, exposing a deserialization of untrusted data vulnerability. An attacker who successfully exploits this flaw could achieve remote code execution, tamper with data, and access sensitive information. The vulnerability is rated high criticality given its potential impact across code execution, data integrity, and confidentiality. NVIDIA has published an advisory through their product-security GitHub repository. The issue is tracked by both the NVD and CVE Program. No additional technical details or proof-of-concept code have been publicly disclosed at this time. Users of NVIDIA Megatron Bridge are advised to monitor NVIDIA's security advisories for patches and mitigations.