CVE-2023-34488

HIGH 8.0EPSS 0.5%

NanoMQ 0.17.5 has a one-byte heap-based buffer over-read in the conn_handler function of mqtt_parser.c when it processes malformed messages.

CVSS v3.1: 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v3.1: 8.0 HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS: 0.51% chance of exploitation in the next 30 days, 41th percentile
Published: 2023-06-12
Updated: 2025-08-29

Proof-of-concept exploits (1)

emqx/nanomq/issues/1181

References

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