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CVE-2025-62723

18
FAUCET Score

CVE-2025-62723 affects FlashMQ, an MQTT broker, specifically versions prior to 1.23.2. An authenticated user can create sessions that accumulate unreleased Quality of Service (QoS) messages, leading to a denial-of-service condition as these messages are not cleared even after session expiration. The vulnerability has a CVSS score of 4.3 (Medium), indicating a low attack complexity and requiring only low privileges for exploitation, with a potential impact of low availability. There is no known active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.23.2CPE matchmatch criteria
cpe:2.3:a:flashmq:flashmq:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
2.8
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.32%
Probability of exploitation in next 30 days
EPSS Percentile
23.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0032 is in the 31st percentile among its peer group of 21,958 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / halfgaar/FlashMQ/commit/e86c49360ef4387440c97f591770cdb9284b4ee9
Patch
github.com / halfgaar/FlashMQ/issues/154
Issue Tracking
github.com / halfgaar/FlashMQ/security/advisories/GHSA-7mhp-22q4-r6vv
PatchVendor Advisory