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CVE-2026-44640

NanoMQ: QUIC Dialer Close Type Confusion

Published: May 29, 2026Updated: May 29, 2026 Sources: CVE List NVD
NVD MITRE
4.5CVSS
MEDIUM

NanoMQ MQTT Broker (NanoMQ) is an all-around Edge Messaging Platform. Prior to 0.24.14, aio->prov_data is stored as nni_quic_conn* during dialing, but read as ex_quic_conn* during dialer close. This type confusion causes invalid object interpretation and leads to close-path hang/crash behavior. This vulnerability is fixed in 0.24.14.

EPSS Score
0.0%
Top 97.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

CVSS Vector Breakdown

AV:LAC:HPR:NUI:RS:UC:LI:LA:L
Exploitability
AV:LAttack Vector
Local
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:LAvailability
Low

Weaknesses

CWE-843

Affected Products

nanomq
nanomq

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://github.com/nanomq/nanomq/releases/tag/0.24.14
github.com
https://github.com/nanomq/nanomq/security/advisories/GHSA-9fgw-v323-jmjj
github.com

Timeline

Published
May 29, 2026
Last Updated
May 29, 2026

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