{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-103653", "assignerOrgId": "a59d8014-47c4-4630-ab43-e1b13cbe58e3", "state": "PUBLISHED", "assignerShortName": "Qt", "dateReserved": "2026-10-01T07:37:03.945Z", "datePublished": "2026-11-03T07:35:45.306Z", "dateUpdated": "2026-11-03T07:35:45.306Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "a59d8014-47c4-4630-ab43-e1b13cbe58e3", "shortName": "Qt", "dateUpdated": "2026-11-03T07:35:45.306Z"}, "title": "Out-of-bounds read vulnerability in CoAP message parsing impacts Qt CoAP", "datePublic": "2026-11-03T08:30:00.000Z", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-125", "description": "CWE-125 Out-of-bounds Read", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-540", "descriptions": [{"lang": "en", "value": "CAPEC-540 Overread Buffers"}]}], "affected": [{"vendor": "qt", "product": "Qt", "modules": ["qtcoap"], "versions": [{"status": "affected", "version": "5.13.0", "lessThanOrEqual": "6.8.8", "versionType": "python"}, {"status": "affected", "version": "6.9.0", "lessThanOrEqual": "6.11.2", "versionType": "python"}, {"status": "unaffected", "version": "0", "lessThan": "5.13.0", "versionType": "python"}], "defaultStatus": "unaffected", "cpes": ["cpe:2.3:a:qt:qt:*:*:*:*:*:*:*:*", "cpe:2.3:a:qt:qtcoap:*:*:*:*:*:*:*:*"]}], "cpeApplicability": [{"operator": "OR", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:qt:qt:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13.0", "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": "5.13.0"}]}]}], "descriptions": [{"lang": "en", "value": "An out-of-bounds read vulnerability in the Qt CoAP message parsing (QCoapInternalReply::createFromFrame()) of the Qt CoAP module.\u00a0Processing a malformed CoAP message can cause an application using Qt CoAP to crash (loss of availability) or to continue operating on incorrect data (potential loss of integrity).", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>An out-of-bounds read vulnerability in the Qt CoAP message parsing (QCoapInternalReply::createFromFrame()) of the Qt CoAP module.&nbsp;<span>Processing a malformed CoAP message can cause an application using Qt CoAP to crash (loss of availability) or to continue operating on incorrect data (potential loss of integrity).</span></p>"}]}], "references": [{"url": "https://wiki.qt.io/List_of_known_vulnerabilities_in_Qt_products#CVE-2026-103653:", "tags": ["vendor-advisory"]}, {"url": "https://codereview.qt-project.org/c/qt/qtcoap/+/760652", "tags": ["patch"]}, {"url": "https://codereview.qt-project.org/c/qt/qtcoap/+/761120", "tags": ["patch"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subAvailabilityImpact": "NONE", "exploitMaturity": "UNREPORTED", "Safety": "NOT_DEFINED", "Automatable": "YES", "Recovery": "USER", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "LOW", "providerUrgency": "AMBER", "version": "4.0", "baseSeverity": "MEDIUM", "baseScore": 6.7, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:U/AU:Y/R:U/RE:L/U:Amber"}}], "source": {"discovery": "UNKNOWN"}, "x_generator": {"engine": "Vulnogram 0.2.0"}}}}

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{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.13.0,6.8.8]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.9.0,6.11.2]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,5.13.0)"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Qt", "source": "cna", "vendor": "qt"}, "product": "qt", "vendor": "qt"}, {"configurations": [{"platform": null, "status": "affected", "versions": null}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "product": "qtcoap", "vendor": "qt"}], "created": "2026-11-03T08:30:17.869362+00:00", "updated": "2026-11-03T11:45:06.512453+00:00", "vendors": ["qt", "qt$PRODUCT$qt", "qt$PRODUCT$qtcoap"]}