halfgaar FlashMQ up to 1.23.1 QoS Message release of resource

CVSS Meta Temp Score
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CTI Interest Score
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4.2$0-$5k0.00

Summaryinfo

A vulnerability was found in halfgaar FlashMQ up to 1.23.1 and classified as problematic. Affected by this issue is some unknown functionality of the component QoS Message Handler. Such manipulation leads to release of resource. This vulnerability is listed as CVE-2025-62723. The attack may be performed from remote. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in halfgaar FlashMQ up to 1.23.1. It has been rated as problematic. Affected by this issue is an unknown code of the component QoS Message Handler. The manipulation with an unknown input leads to a release of resource vulnerability. Using CWE to declare the problem leads to CWE-772. The product does not release a resource after its effective lifetime has ended, i.e., after the resource is no longer needed. Impacted is availability. CVE summarizes:

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.

The advisory is available at github.com. This vulnerability is handled as CVE-2025-62723 since 10/20/2025. The exploitation is known to be easy. The attack may be launched remotely. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

Upgrading to version 1.23.2 eliminates this vulnerability. Applying the patch e86c49360ef4387440c97f591770cdb9284b4ee9 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

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Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.2

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 4.3
CNA Vector (GitHub_M): 🔒

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Release of resource
CWE: CWE-772 / CWE-400 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: FlashMQ 1.23.2
Patch: e86c49360ef4387440c97f591770cdb9284b4ee9

Timelineinfo

10/20/2025 CVE reserved
10/25/2025 +5 days Advisory disclosed
10/25/2025 +0 days VulDB entry created
10/25/2025 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 154
Status: Confirmed

CVE: CVE-2025-62723 (🔒)
GCVE (CVE): GCVE-0-2025-62723
GCVE (VulDB): GCVE-100-329858

Entryinfo

Created: 10/25/2025 07:45
Changes: 10/25/2025 07:45 (66)
Complete: 🔍
Cache ID: 216::103

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