Executive brief
NVIDIA Megatron Bridge, a tool used for connecting large language model frameworks, contains a security vulnerability in how it handles code resources. A local attacker with basic user access could exploit this flaw to take control of the system, modify sensitive data, or access private information. This could lead to a full compromise of the environment where the AI models are being developed or deployed.
Technical details
NVIDIA Megatron Bridge for Linux (versions 0.0 through 0.4.0) is vulnerable to the deserialization of untrusted data (CWE-502). The flaw exists in the management of dynamically controlled code resources, where improper validation allows an attacker to influence the execution flow. An attacker with local access and low privileges can exploit this vulnerability to achieve arbitrary code execution, escalate their privileges on the host system, and perform unauthorized data tampering or information disclosure. The attack vector is local (AV:L) and requires no user interaction.
Affected products
- NVIDIA Megatron-Bridge 0.0 to 0.4.0
Timeline
- 2026-07-01: disclosed: Initial publication of the CVE record
- 2026-07-01: advisory: NVIDIA product security advisory published