Executive brief
NVIDIA Megatron Bridge, a tool used for bridging large-scale machine learning models, contains a security flaw in how it handles data. An attacker with local access to a system could exploit this to run unauthorized commands, gain higher system privileges, or access sensitive information. This could lead to a full system compromise or the theft of proprietary AI model data.
Technical details
NVIDIA Megatron Bridge for Linux (versions 0.0 through 0.4.0) is vulnerable to the deserialization of untrusted data (CWE-94). The vulnerability allows a local attacker with low privileges to provide a specially crafted input that, when processed by the bridge, executes arbitrary code. This can result in a complete loss of confidentiality, integrity, and availability (CVSS 7.8). The attack vector is local, requiring the attacker to have an existing foothold on the system, but no user interaction is required for successful exploitation.
Affected products
- NVIDIA Megatron-Bridge 0.0 to 0.4.0
Timeline
- 2026-07-01: advisory: NVIDIA published the security advisory and CVE details.