CVE Watch4 nov 2026

CVE-2026-114550

libwebsockets MQTT Protocol PUBACK Packet Handling Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote

CVSS

8.1

Alto

EPSS

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KEV

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Exploit Today

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0-100

Publicado: 4 nov 2026 · Última mod.: 4 nov 2026 · CWE-787

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

libwebsockets MQTT Protocol PUBACK Packet Handling Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of libwebsockets. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of PUBACK packets. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-31039.

Referencias oficiales

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