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Vulnerabilities CVE-2025-63235

CVE-2025-63235

None
Open
TLP:CLEAR

AI Analysis

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Description

In sol commit 373d848 (2024-12-12), the broker does not fully release resources when handling malformed or duplicate CONNECT packets. When clients send invalid CONNECT packets - either due to repeated attempts or failed authentication - the server may silently drop the connection or send a CONNACK but fail to close the session or deallocate internal resources. This behavior allows an attacker to create numerous half-open connections that consume memory and file descriptors indefinitely, potentially triggering the Linux OOM killer and causing a denial of service.

Details

EPSS Score
0.32%

24.3th percentile

Confidence
90%
Published
Aug 7, 2026
Last Modified
Aug 7, 2026
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