CVE-2026-101003

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{"bugzilla": {"description": "mongoose: mongoose: Denial of Service via stack-based buffer overflow in MQTT broker", "id": "2542308", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2542308"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "status": "draft"}, "cwe": "CWE-787", "details": ["A flaw was found in Mongoose. A remote attacker can trigger a stack-based buffer overflow by sending specially crafted network messages to the MQTT broker component. This flaw could lead to a Denial of Service (DoS) condition by crashing the application."], "name": "CVE-2026-101003", "public_date": "2026-09-28T05:30:14Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-101003\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-101003\nhttps://github.com/cesanta/mongoose/\nhttps://github.com/cesanta/mongoose/commit/a9df523f76f43a38bd53b4232b9cfd4c16869e71\nhttps://github.com/cesanta/mongoose/releases/tag/7.22\nhttps://vuldb.com/cve/CVE-2026-101003\nhttps://vuldb.com/submit/920005\nhttps://vuldb.com/vuln/410873\nhttps://vuldb.com/vuln/410873/cti"], "statement": "This vulnerability is evaluated as having Moderate impact for Red Hat because, although triggered remotely over network inputs without authentication, the scope of impact is limited to a denial of service crash and targets demonstration code rather than core platform functionality. The flawed broker logic resides within upstream tutorial files that are not deployed or enabled in supported Red Hat products. Any potential risk is confined to specialized community builds where this standalone server example is explicitly compiled and exposed to untrusted traffic.", "threat_severity": "Moderate"}

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