Executive brief
NVIDIA Megatron Bridge is a distributed communication framework used in large-scale AI model training. A deserialization vulnerability allows an attacker to execute arbitrary code, modify data, or steal sensitive information by sending malicious serialized data to affected systems.
Technical details
The vulnerability is a classic unsafe deserialization flaw in NVIDIA Megatron Bridge where untrusted data is deserialized without proper validation. An attacker can craft a malicious serialized payload that, when deserialized by the application, triggers arbitrary code execution. The attack requires network access to systems running the vulnerable Megatron Bridge component. Successful exploitation results in remote code execution, data tampering, and information disclosure with no authentication required.
Affected products
- NVIDIA Megatron Bridge
Timeline
- 2026-09-01: disclosed: CVE-2026-61756 published