CVE-2026-61761 is a deserialization of untrusted data vulnerability affecting NVIDIA Megatron Bridge. An attacker who successfully exploits this vulnerability could achieve remote code execution, tamper with data, and disclose sensitive information. The vulnerability is currently undergoing analysis on the NVD. NVIDIA has published security advisory details in their product-security GitHub repository. The flaw is classified as high criticality given its potential impact on code execution and data integrity. No patch or mitigation details are explicitly mentioned in the article content. Users of NVIDIA Megatron Bridge should monitor NVIDIA's security advisories for updates and remediation guidance.