CVE-2025-62723 - CVE House
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Status published Medium CVE-2025-62723

FlashMQ does not release memory of queued QoS messages

Vulnerability Description

FlashMQ is a MQTT broker/server, designed for multi-CPU environments. Prior to version 1.23.2, any authenticated user can create sessions and have them collect QoS messages. When not sent to a client, these are then not released upon (eventual) session expiration. Version 1.23.2 fixes the issue.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

Affected Vendor

Affected Software

FlashMQ
Vulnerable Versions:
< 1.23.2

Timeline

Official Publish: October 24th, 2025
Last Modified: October 24th, 2025
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Weaknesses (CWE)

CWE-772

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.