CVE-2026-61753 is a high-severity vulnerability affecting NVIDIA Megatron Bridge. The flaw involves deserialization of untrusted data, a class of vulnerability commonly exploitable by remote or local attackers to achieve arbitrary code execution. A successful exploit could lead to code execution, data tampering, and information disclosure. NVIDIA has published a security advisory referencing this CVE. The vulnerability is currently undergoing analysis by NVD. No patch or mitigation details are included in this article. The affected product, NVIDIA Megatron Bridge, is likely used in large-scale AI/ML training infrastructure, making the potential impact significant.