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.
Advisories

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Fixes

Solution

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Workaround

No workaround given by the vendor.

History

Tue, 17 Mar 2026 19:30:00 +0000

Type Values Removed Values Added
First Time appeared Emqx
Emqx nanomq
CPEs cpe:2.3:a:emqx:nanomq:*:*:*:*:*:*:*:*
Vendors & Products Emqx
Emqx nanomq

Thu, 12 Mar 2026 10:15:00 +0000

Type Values Removed Values Added
First Time appeared Nanomq
Nanomq nanomq
Vendors & Products Nanomq
Nanomq nanomq

Wed, 11 Mar 2026 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 11 Mar 2026 15:30:00 +0000

Type Values Removed Values Added
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.
Title MQTT v5 Variable Byte Integer parsing out-of-bounds: get_var_integer()
Weaknesses CWE-125
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-03-11T15:35:36.678Z

Reserved: 2026-01-05T17:24:36.929Z

Link: CVE-2026-21888

cve-icon Vulnrichment

Updated: 2026-03-11T15:35:27.865Z

cve-icon NVD

Status : Analyzed

Published: 2026-03-11T16:16:23.930

Modified: 2026-03-17T19:20:17.350

Link: CVE-2026-21888

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-03-12T10:05:44Z

Weaknesses