CVE-2024-44775Network attack vector

Broker crash via unhandled CONNECT null reference

Published Oct 15, 2024 · Updated Apr 3, 2026

Denial of service in the KMQTT 0.2.7 broker allows remote attackers to crash the process with a crafted MQTT CONNECT packet. CONNECT packet handling dereferences a null reference without handling the resulting exception, immediately terminating the broker process. No authentication or user interaction is required, and the reported consequence is limited to loss of broker availability.

CVSS severity7.5
High
EPSS probability0.53%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in the KMQTT 0.2.7 broker allows remote attackers to crash the process with a crafted MQTT CONNECT packet. CONNECT packet handling dereferences a null reference without handling the resulting exception, immediately terminating the broker process. No authentication or user interaction is required, and the reported consequence is limited to loss of broker availability.

The record

CVE
CVE-2024-44775
Published
Oct 15, 2024
Updated
Apr 3, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-444, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 15, 2024CVE publishedPublication date reported by the CVE source.
  2. Apr 3, 2026Record 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

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/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.

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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 exploitUnconfirmed

Weakness, pattern, technique

CWE-444Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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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