Description
hmq v1.5.5 is vulnerable to Denial of Service (DoS) due to a Null Pointer Exception. A remote attacker can trigger a broker crash by sending a specially crafted MQTT UNSUBSCRIBE packet with an illegal control character Topic. The failure to properly validate this field leads to a null pointer dereference, resulting in the immediate termination of the hmq process.
Published: 2024-05-29
Score: 5.3 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2024-35346 An issue in hmq v1.5.5 allows attackers to cause a Denial of Service (DoS) via crafted requests.
History

Thu, 16 Apr 2026 15:15:00 +0000

Type Values Removed Values Added
Description An issue in hmq v1.5.5 allows attackers to cause a Denial of Service (DoS) via crafted requests. hmq v1.5.5 is vulnerable to Denial of Service (DoS) due to a Null Pointer Exception. A remote attacker can trigger a broker crash by sending a specially crafted MQTT UNSUBSCRIBE packet with an illegal control character Topic. The failure to properly validate this field leads to a null pointer dereference, resulting in the immediate termination of the hmq process.

Thu, 13 Feb 2025 16:15:00 +0000

Type Values Removed Values Added
First Time appeared Fhmq
Fhmq hmq
CPEs cpe:2.3:a:fhmq:hmq:1.5.5:*:*:*:*:*:*:*
Vendors & Products Fhmq
Fhmq hmq
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 22 Aug 2024 22:00:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'}


cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-04-16T14:39:03.891Z

Reserved: 2024-05-17T00:00:00.000Z

Link: CVE-2024-35512

cve-icon Vulnrichment

Updated: 2024-08-02T03:14:53.107Z

cve-icon NVD

Status : Deferred

Published: 2024-05-29T17:16:20.540

Modified: 2026-04-16T15:16:48.460

Link: CVE-2024-35512

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses

No weakness.