Cyber Resilience

CVE-2023-28366

High

Published: 01 September 2023

Published
01 September 2023
Modified
26 June 2025
KEV Added
Patch
CVSS Score v3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0012 30.2th percentile
Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2023-28366 is a high-severity Missing Release of Memory after Effective Lifetime (CWE-401) vulnerability in Eclipse Mosquitto. Its CVSS base score is 7.5 (High).

Operationally, ranked at the 30.2th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

The broker in Eclipse Mosquitto 1.3.2 through 2.x before 2.0.16 has a memory leak that can be abused remotely when a client sends many QoS 2 messages with duplicate message IDs, and fails to respond to PUBREC commands. This occurs…

more

because of mishandling of EAGAIN from the libc send function.

CWE(s)

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

eclipse
mosquitto
1.3.2 — 2.0.16

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References