NVIDIA Megatron-LM for all platforms contains a vulnerability in a script, where malicious data created by an attacker may cause a code injection issu...
Description
NVIDIA Megatron-LM for all platforms contains a vulnerability in a script, where malicious data created by an attacker may cause a code injection issue
Remediation
Apply vendor security updates immediately. Monitor for exploitation attempts and review access logs.
Executive Summary:
A high-severity vulnerability has been discovered in the NVIDIA Triton Inference Server, a key component in many AI and machine learning infrastructures. An attacker with local access to an affected system could exploit this flaw to corrupt the server's memory, potentially causing a denial of service by crashing the application or, in a worst-case scenario, allowing the attacker to execute arbitrary code. This could lead to significant service disruption and potential system compromise.
Vulnerability Details
CVE-ID: CVE-2025-23329
Affected Software: NVIDIA Triton Inference Server
Affected Versions: See vendor advisory for specific affected versions
Vulnerability: The vulnerability exists in the way the NVIDIA Triton Inference Server's Python backend utilizes shared memory. An attacker with local access to the host system can identify the specific shared memory region used by the backend. By writing crafted data to this improperly protected memory region, the attacker can trigger memory corruption within the Triton server process, leading to a crash (Denial of Service) or potentially hijacking the program's execution flow to achieve arbitrary code execution.
Business Impact
This vulnerability is rated as High severity with a CVSS score of 7.5. Successful exploitation could have a significant business impact by causing a Denial of Service (DoS) condition, rendering critical AI/ML-powered applications and services unavailable. This disruption could lead to operational downtime, revenue loss, and reputational damage. In the event that an attacker achieves code execution, they could gain control of the server, leading to data theft, intellectual property loss, or lateral movement into the broader corporate network.
Remediation Plan
Immediate Action: The primary and most effective remediation is to apply the security updates provided by NVIDIA to all vulnerable instances of the Triton Inference Server immediately. After patching, organizations should monitor for any signs of post-remediation exploitation attempts and review system and application access logs for any suspicious activity that occurred prior to the patch.
Proactive Monitoring: Security teams should monitor for anomalous process behavior on hosts running Triton, specifically looking for unexpected processes attempting to access memory segments owned by the Triton server. Monitor application logs for unexpected crashes or errors related to the Python backend. Enhanced logging and alerting on local user account activity on these servers can also help detect precursor attack behavior.
Compensating Controls: If patching cannot be performed immediately, organizations should implement compensating controls. Restrict local and shell access to servers running Triton Inference Server to only essential, authorized personnel. Employ host-based security solutions or mandatory access control systems (like SELinux or AppArmor) to enforce stricter process isolation and limit access to shared memory segments.
Exploitation Status
Public Exploit Available: false
Analyst Notes: As of the publication date, September 17, 2025, there are no known public proof-of-concept exploits or active exploitation of this vulnerability in the wild. However, given the high-severity rating, it is anticipated that threat actors will analyze the patch to develop exploits. Organizations should treat this as a critical vulnerability requiring prompt attention.
Analyst Recommendation
Due to the high CVSS score and the critical role of the Triton Inference Server in AI/ML pipelines, this vulnerability poses a significant risk to the organization. Although it is not currently listed on the CISA KEV (Known Exploited Vulnerabilities) catalog, the potential for Denial of Service and arbitrary code execution warrants immediate action. We strongly recommend that all system owners prioritize the deployment of the vendor-supplied security patches to all affected systems to mitigate this risk before exploits become publicly available.