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-2026-61777 is a high-severity vulnerability identified in NVIDIA Megatron Bridge involving deserialization of untrusted data. An attacker exploiting this flaw could achieve remote code execution, tamper with sensitive data, and exfiltrate information. The vulnerability was published via the National Vulnerability Database (NVD) and is tracked under NVIDIA's product security advisories. Deserialization vulnerabilities are particularly dangerous as they can allow attackers to execute arbitrary code without authentication. NVIDIA has published a security advisory on GitHub detailing the issue. The CVE record is also available through the CVE.org registry. Users and administrators of NVIDIA Megatron Bridge are advised to review the advisory and apply any available patches promptly.