NVIDIA NeMo and Megatron RCE Vulnerabilities

THREAT INTELLIGENCE

Peer Review

4.8

Proven Trust

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High

CVE-2025-33239, CVE-2025-33240, CVE-2025-33236, CVE-2025-33241, CVE-2025-33253

Other

February 18, 2026

Executive Summary

Multiple NVIDIA NeMo and Megatron Bridge flaws allow code injection and remote code execution. Upgrade to latest versions to mitigate risk.

Key Details

Affected Platform

Attack Surface

Recommended Action

Affected Environment

Operational Impact

Severity ranges from High (CVSS up to 8.0). Exploitation could compromise AI development pipelines, training environments, or production ML systems, leading to integrity loss and potential broader infrastructure compromise.

Technical Root Cause

Recommended Mitigation

Upgrade Megatron Bridge to version 0.2.2 or later.
Upgrade NeMo Framework to version 2.6.1 or later.
Validate and sanitise external data inputs.
Apply the Principle of Least Privilege.
Implement application control and monitoring for abnormal execution patterns.
Maintain structured vulnerability management across AI and ML environments.

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References

https://nvidia.custhelp.com/app/answers/detail/a_id/5781
https://nvidia.custhelp.com/app/answers/detail/a_id/5762