{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-107457",
        "assignerOrgId": "a59d8014-47c4-4630-ab43-e1b13cbe58e3",
        "state": "PUBLISHED",
        "assignerShortName": "Qt",
        "dateReserved": "2026-10-08T05:22:08.839Z",
        "datePublished": "2026-11-02T08:38:12.500Z",
        "dateUpdated": "2026-11-02T08:38:12.500Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "a59d8014-47c4-4630-ab43-e1b13cbe58e3",
                "shortName": "Qt",
                "dateUpdated": "2026-11-02T08:38:12.500Z"
            },
            "title": "Memory corruption vulnerability in QMqttClient impacts Qt MQTT",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "cweId": "CWE-787",
                            "description": "CWE-787 Out-of-bounds Write",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "cweId": "CWE-129",
                            "description": "CWE-129 Improper Validation of Array Index",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "impacts": [
                {
                    "capecId": "CAPEC-100",
                    "descriptions": [
                        {
                            "lang": "en",
                            "value": "CAPEC-100 Overflow Buffers"
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "vendor": "qt",
                    "product": "Qt",
                    "modules": [
                        "qtmqtt"
                    ],
                    "versions": [
                        {
                            "status": "affected",
                            "version": "5.12.0",
                            "lessThanOrEqual": "6.8.8",
                            "versionType": "python"
                        },
                        {
                            "status": "affected",
                            "version": "6.9.0",
                            "lessThanOrEqual": "6.11.2",
                            "versionType": "python"
                        },
                        {
                            "status": "unaffected",
                            "version": "0",
                            "lessThan": "5.12.0",
                            "versionType": "python"
                        }
                    ],
                    "defaultStatus": "unaffected",
                    "cpes": [
                        "cpe:2.3:a:qt:qt:*:*:*:*:*:*:*:*",
                        "cpe:2.3:a:qt:qtmqtt:*:*:*:*:*:*:*:*"
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "operator": "OR",
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:a:qt:qt:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.12.0",
                                    "versionEndIncluding": "6.8.8"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:a:qt:qt:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.9.0",
                                    "versionEndIncluding": "6.11.2"
                                },
                                {
                                    "vulnerable": false,
                                    "criteria": "cpe:2.3:a:qt:qt:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "0",
                                    "versionEndExcluding": "5.12.0"
                                }
                            ]
                        }
                    ]
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "value": "A memory corruption vulnerability in the QMqttClient class of the Qt MQTT module. Under certain MQTT 5 connection settings between client and server, QMqttClient may corrupt memory, which can cause the application to crash.",
                    "supportingMedia": [
                        {
                            "type": "text/html",
                            "base64": false,
                            "value": "A memory corruption vulnerability in the QMqttClient class of the Qt MQTT module. Under certain MQTT 5 connection settings between client and server, QMqttClient may corrupt memory, which can cause the application to crash."
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://wiki.qt.io/List_of_known_vulnerabilities_in_Qt_products#CVE-2026-107457:",
                    "tags": [
                        "vendor-advisory"
                    ]
                },
                {
                    "url": "https://codereview.qt-project.org/c/qt/qtmqtt/+/762286",
                    "tags": [
                        "patch"
                    ]
                }
            ],
            "metrics": [
                {
                    "format": "CVSS",
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "GENERAL"
                        }
                    ],
                    "cvssV4_0": {
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "attackRequirements": "PRESENT",
                        "privilegesRequired": "NONE",
                        "userInteraction": "PASSIVE",
                        "vulnConfidentialityImpact": "NONE",
                        "subConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "vulnAvailabilityImpact": "HIGH",
                        "subAvailabilityImpact": "NONE",
                        "exploitMaturity": "UNREPORTED",
                        "Safety": "NOT_DEFINED",
                        "Automatable": "NOT_DEFINED",
                        "Recovery": "USER",
                        "valueDensity": "NOT_DEFINED",
                        "vulnerabilityResponseEffort": "LOW",
                        "providerUrgency": "GREEN",
                        "version": "4.0",
                        "baseSeverity": "LOW",
                        "baseScore": 2.3,
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/R:U/RE:L/U:Green"
                    }
                }
            ],
            "source": {
                "discovery": "INTERNAL"
            },
            "x_generator": {
                "engine": "Vulnogram 1.0.5"
            }
        }
    }
}