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{"affected": [{"configurations": [{"platform": ["all_platforms"], "status": "affected", "versions": {"scheme": "semver", "value": "[0,0.15.3)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Megatron LM", "source": "cna", "vendor": "NVIDIA"}, "product": "megatron-lm", "vendor": "nvidia"}], "analysis": {"en": {"generated_at": "2026-03-24T21:23:21.787469+00:00", "value": {"mitigation_remediation": ["Apply any vendor-provided patch or update for NVIDIA Megatron\u2011LM as soon as it becomes available.", "Ensure that only trusted checkpoint files are loaded by restricting source directories and validating file integrity before loading.", "Configure the system to run the model with the least privilege possible, limiting what code execution can do.", "Monitor application logs for anomalous checkpoint loading attempts and investigate promptly."], "summary": {"action": "Immediate Patch", "impact": "Remote Code Execution"}, "threat_synthesis": {"affected_systems": "The product affected is NVIDIA Megatron\u2011LM. Specific affected versions are not listed in the available data.", "description_and_impact": "The vulnerability lies within NVIDIA Megatron\u2011LM\u2019s checkpoint loading routine. By persuading a user to load a specially crafted checkpoint file, an attacker can execute arbitrary code. This capability permits privilege escalation, disclosure of sensitive information, and tampering with model data, effectively allowing complete compromise of the affected system.", "risk_and_exploitability": "The CVSS score of 7.8 indicates high severity, and while EPSS data is absent, the lack of a KEV listing does not mitigate the risk. The likely attack vector requires social engineering to convince a user to load the malicious file, suggesting the vulnerability is exploitable in environments where checkpoints are accepted from external sources."}}}}, "created": "2026-03-25T11:46:02.994280+00:00", "title": "Remote Code Execution via Malicious Checkpoint Loading in NVIDIA Megatron\u2011LM", "updated": "2026-03-25T20:57:28.910392+00:00", "vendors": ["nvidia", "nvidia$PRODUCT$megatron-lm"]}