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CVE-2026-21888

nvd nist
Published: Mar 11, 2026Modified: Mar 17, 2026

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7.5
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Exploitability: 3.9 / Impact: 3.6
Source: security-advisories@github.com (Secondary)

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.

Affected (1)

Products: Emqx: Nanomq
Emqx
1 product
Nanomq
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Nanomq
Up to 0.24.6

Related CWEs

CWE-125
Out-of-bounds Read
The product reads data past the end, or before the beginning, of the intended buffer.

References (2)

Source: security-advisories@github.com
Issue Tracking
Source: security-advisories@github.com
ExploitVendor Advisory

Timeline

No history available yet.