CVE-2024-42648Public exploitNetwork attack vector

Broker crash via out-of-bounds property read

Published Jul 14, 2025 · Updated Jul 16, 2025

Heap-based buffer overflow in NanoMQ 0.22.10 allows remote attackers to crash the MQTT broker with a crafted CONNECT message. The decode_buf_properties function reads one byte beyond the allocated heap buffer while decoding attacker-controlled MQTT properties. No authentication is required; successful exploitation crashes the broker process and interrupts MQTT service.

CVSS severity6.5
Medium
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap-based buffer overflow in NanoMQ 0.22.10 allows remote attackers to crash the MQTT broker with a crafted CONNECT message. The decode_buf_properties function reads one byte beyond the allocated heap buffer while decoding attacker-controlled MQTT properties. No authentication is required; successful exploitation crashes the broker process and interrupts MQTT service.

The record

CVE
CVE-2024-42648
Published
Jul 14, 2025
Updated
Jul 16, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, CWE-122, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 14, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 16, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
CWE-122Heap-based Buffer Overflow
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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