{"schemaVersion":3,"id":"CVE-2026-40006","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Memory Allocation with Excessive Size Value, Allocation of Resources Without Limits or Throttling, Missing Authentication for Critical Function vulnerability in Apache IoTDB.\nWhen pipe_air_gap_receiver_enabled=true, the IoTDB AirGap pipe receiver\naccepts raw TCP connections on port 9780 with no authentication. The\nreadLength method reads an attacker-controlled 32-bit integer from the\nsocket and readData passes it directly to new byte[length] with no\nupper-bound check. An unauthenticated attacker can cause the JVM to attempt\nan allocation of up to 2,147,483,647 bytes per connection, exhausting heap\nmemory and crashing or severely degrading the DataNode process.\n\n\nThis issue affects Apache IoTDB: from 1.0.0 before 2.0.10.\n\nUsers are recommended to upgrade to version 2.0.10, which fixes the 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