{"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.\u00a0Under 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"}}}}

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