{"id":"EM-20261104-4HWV","url":"https://cyber.eventmonitor.net/incident/EM-20261104-4HWV/","type":"cve","title":"libwebsockets Vulnerability (CVE-2026-114550)","subtitle":"CVE-2026-114550","subject":"CVE-2026-114550","status":"Developing","severity":"high","affected":[],"headline":null,"born":"2026-11-04T00:17:22.783Z","firstSignal":"2026-11-03T23:47:02.000Z","lastSignal":"2026-11-04T00:17:22.783Z","updated":"2026-11-04T14:43:58.877Z","revision":1,"life":[{"status":"Born","at":"2026-11-04T00:17:22.783Z","why":"second independent source: C6 NVD CVE API 2.0"},{"status":"Developing","at":"2026-11-04T00:17:22.783Z","why":"signals keep joining"}],"changeLog":[{"at":"2026-11-03T23:47:02.000Z","what":"First signal: C41 Red Hat Security Data"},{"at":"2026-11-04T00:17:22.783Z","what":"Born: second source, C6 NVD CVE API 2.0. Page EM-20261104-4HWV created."}],"stages":[{"name":"Disclosed","at":"2026-11-04T00:17:22.783Z","detail":"C6 NVD published"},{"name":"Scored","at":"2026-11-04T00:17:22.783Z","detail":"CVSS 8.1 · EPSS 0.8%"},{"name":"Exploited","at":null,"detail":"No exploitation reported"},{"name":"Advisories","at":null,"detail":"None yet"},{"name":"Vendor Response","at":"2026-11-03T23:47:02.000Z","detail":"C41 published"},{"name":"Resolved","at":null,"detail":"After 14 quiet days"}],"signals":[{"at":"2026-11-03T23:47:02.000Z","source":"C41","sourceName":"Red Hat Security Data","role":"Vendor","severity":3,"title":"Red Hat: CVE-2026-114550 (important)","text":"libwebsockets: libwebsockets: arbitrary code execution via crafted MQTT PUBACK packets","url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-114550.json"},{"at":"2026-11-04T00:17:22.783Z","source":"C6","sourceName":"NVD CVE API 2.0","role":"Database","severity":3,"title":"CVE-2026-114550 (CVSS 8.1)","text":"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.\n\nThe 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-","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-114550"}],"crowd":[],"reference":{"nvd":{"published":"2026-11-04T00:17:22.783","score":8.1,"severity":"HIGH","desc":"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.\n\nThe specific fla","product":"","seen":1793803438877},"kev":null,"epss":{"epss":0.00842,"pct":0.58041,"at":1793803438877},"p0":false},"mergedInto":null,"publisher":"Event Monitor Cyber"}