CVE-2025-62723

FlashMQ does not release memory of queued QoS messages

Published Oct 24, 2025 CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
CPEs cpe:2.3:a:flashmq:flashmq:*:*:*:*:*:*:*:*
Type Values Removed Values Added
First Time appeared Flashmq
Flashmq flashmq
Vendors & Products Flashmq
Flashmq flashmq
Type Values Removed Values Added
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.
Title FlashMQ does not release memory of queued QoS messages
Weaknesses CWE-772
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Oct 24, 2025, 8:32 PM
Reserved
Oct 20, 2025, 7:41 PM
Status
Analyzed
Published
Oct 24, 2025, 9:16 PM
Modified
Oct 8, 2026, 11:10 AM