CVE-2026-25627 | BDVDB-2026-323694 Detail

Description#

NanoMQ MQTT Broker (NanoMQ) is an all-around Edge Messaging Platform. Prior to version 0.24.8, NanoMQ’s MQTT-over-WebSocket transport can be crashed by sending an MQTT packet with a deliberately large Remaining Length in the fixed header while providing a much shorter actual payload. The code path copies Remaining Length bytes without verifying that the current receive buffer contains that many bytes, resulting in an out-of-bounds read (ASAN reports OOB / crash). This is remotely triggerable over the WebSocket listener. This issue has been patched in version 0.24.8.

Impact#

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Exploit#

History#

1. Version 12026-03-30Record published in the CVE List.
2. Version 22026-03-31Most recent update recorded in the CVE List.