Medium 4.3Published Oct 24, 2025

CVE-2025-62723FlashMQ does not release memory of queued QoS messages

Updated under an hour ago (Oct 27, 2026, 1:10 PM ET)

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It affects halfgaar FlashMQ and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for halfgaar FlashMQ

Exploited in the last 30 days

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.

CVSS: 4.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Weakness (CWE): CWE-772
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Oct 24, 2025
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

halfgaar FlashMQ halfgaar:flashmq (from the name)	before 1.23.2	CNA record
flashmq flashmq flashmq:flashmq	before 1.23.2	NVD

References

References

https://github.com/halfgaar/FlashMQ/security/advisories/GHSA-7mhp-22q4-r6vv	x-refsource-confirm, patch, vendor-advisory
https://github.com/halfgaar/FlashMQ/issues/154	x-refsource-misc, issue-tracking
https://github.com/halfgaar/FlashMQ/commit/e86c49360ef4387440c97f591770cdb9284b4ee9	x-refsource-misc, patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.