CVE-2026-21990

# CVE-2026-21990 PoC - Oracle VM VirtualBox Core Component Exploitation # Note: This is a conceptual PoC for educational purposes only # Actual exploitation requires specific conditions and environment import ctypes import os import sys def check_virtualbox_version(): """Check if VirtualBox version is vulnerable""" try: # Attempt to get VirtualBox version # Vulnerable versions: 7.1.14, 7.2.4 version_check = "VBoxManage --version" return True # In real scenario, parse version output except Exception as e: print(f"[-] Error checking version: {e}") return False def exploit_cve_2026_21990(): """ Conceptual exploitation steps for CVE-2026-21990: 1. Attacker gains high-privileged access to host system 2. Attacker identifies vulnerable VirtualBox installation 3. Attacker crafts malicious input to Core component 4. Privilege escalation to VirtualBox process context 5. Potential VM escape or host compromise """ print("[*] CVE-2026-21990 - Oracle VM VirtualBox Core Exploitation") print("[*] Target: Oracle VM VirtualBox < 7.1.14 or < 7.2.4") if not check_virtualbox_version(): print("[-] VirtualBox not found or not vulnerable") return False print("[+] Vulnerable VirtualBox installation detected") print("[+] This vulnerability requires high-privileged local access") print("[+] Exploitation leads to complete system compromise") print("[-] PoC demonstration complete - patch immediately") return True if __name__ == "__main__": print("WARNING: This is for authorized security testing only") exploit_cve_2026_21990()

{"cve": {"id": "CVE-2026-21990", "sourceIdentifier": "[email protected]", "published": "2026-01-20T22:16:02.590", "lastModified": "2026-01-29T16:00:32.770", "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. Easily exploitable vulnerability allows high privileged attacker with logon to the infrastructure where Oracle VM VirtualBox executes to compromise Oracle VM VirtualBox. While the vulnerability is in Oracle VM VirtualBox, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in takeover of Oracle VM VirtualBox. CVSS 3.1 Base Score 8.2 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/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 fácilmente explotable permite a un atacante con altos privilegios con inicio de sesión en la infraestructura donde se ejecuta Oracle VM VirtualBox comprometer Oracle VM VirtualBox. Aunque la vulnerabilidad está en Oracle VM VirtualBox, los ataques pueden impactar significativamente productos adicionales (cambio de alcance). Ataques exitosos de esta vulnerabilidad pueden resultar en la toma de control de Oracle VM VirtualBox. Puntuación Base CVSS 3.1 8.2 (impactos en Confidencialidad, Integridad y Disponibilidad). Vector CVSS: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H)."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H", "baseScore": 8.2, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.5, "impactScore": 6.0}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "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"]}]}}