How severe is CVE-2025-62723?

CVE-2025-62723 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2025-62723 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-62723?

CVE-2025-62723 affects Flashmq. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-62723?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-62723 have an EU (EUVD) identifier?

Yes. CVE-2025-62723 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-35890.

When was CVE-2025-62723 published?

CVE-2025-62723 was published on 2025-10-24 and last updated on 2026-06-17.

CVE-2025-62723

CVE-2025-62723 is a medium-severity vulnerability in Flashmq with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-772.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-35890
Weakness: CWE-772
Affected product: Flashmq
Published: 2025-10-24
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2025-62723?: 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.
How severe is CVE-2025-62723?: CVE-2025-62723 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2025-62723 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-62723?: CVE-2025-62723 affects Flashmq. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-62723?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-62723 have an EU (EUVD) identifier?: Yes. CVE-2025-62723 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-35890.
When was CVE-2025-62723 published?: CVE-2025-62723 was published on 2025-10-24 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:flashmq:flashmq:*:*:*:*:*:*:*:*

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