Executive brief
NVIDIA Megatron Bridge is a library used for distributed training and inference of large neural networks. A deserialization vulnerability allows an attacker to execute arbitrary code, modify data, or access sensitive information if they can provide untrusted serialized input to the application.
Technical details
NVIDIA Megatron Bridge contains an insecure deserialization vulnerability (CWE-502) where the library deserializes untrusted data without proper validation. An attacker who can control serialized input—such as via network communication or file loading—can craft malicious payloads to achieve remote code execution, data tampering, or information disclosure. The vulnerability requires the affected application to pass untrusted data to the deserialization function. A fix or patch is expected from NVIDIA.
Affected products
- NVIDIA Megatron Bridge
Timeline
- 2026-09-01: disclosed