Description
NanoMQ MQTT Broker (NanoMQ) is an all-around Edge Messaging Platform. MQTT v5 Variable Byte Integer parsing out-of-bounds: get_var_integer() accepts 5-byte varints without bounds checks; reliably triggers OOB read / crash when built with ASan. This affects 0.24.6 and earlier.
References (2)
Core 2
Core References
Vendor Advisory x_refsource_confirm
https://github.com/nanomq/nanomq/security/advisories/GHSA-cggc-6m7w-j7x5
Issue Tracking x_refsource_misc
https://github.com/nanomq/nanomq/issues/2192
Scores
CVSS v3
7.5
EPSS
0.0030
EPSS Percentile
21.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-125
Status
published
Products (1)
emqx/nanomq
< 0.24.6
Published
Mar 11, 2026
Tracked Since
Mar 11, 2026