{"id":"CVE-2026-107457","aliases":["EUVD-2026-115111","GHSA-g94w-7rpc-xf8m"],"status":"published","title":"Memory corruption vulnerability in QMqttClient impacts Qt MQTT","description":"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.","severity":{"version":"4.0","score":2.3,"vector":"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","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00263,"percentile":0.18242,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-129","CWE-787"],"published":"2026-11-02T08:38:12Z","modified":"2026-11-02T19:21:56Z","products":[{"vendor":"qt","product":"qt"},{"vendor":"the qt company","product":"qt"}],"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"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-107457"},{"url":"https://github.com/advisories/GHSA-g94w-7rpc-xf8m"}],"sources":{"cve":[{"id":"CVE-2026-107457","title":"Memory corruption vulnerability in QMqttClient impacts Qt MQTT","description":"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.","status":"published","published":"2026-11-02T08:38:12.5Z","modified":"2026-11-02T19:21:56.15Z","cvss":[{"version":"4.0","score":2.3,"vector":"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","level":"low","assessor":"cna"}],"cwes":["CWE-787","CWE-129"],"updated_at":"2026-11-02T20:51:24.336573Z"}],"euvd":[{"id":"EUVD-2026-115111","description":"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.","status":"published","published":"2026-11-02T08:38:12Z","modified":"2026-11-02T19:21:56Z","cvss":[{"version":"4.0","score":2.3,"vector":"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","level":"low"}],"updated_at":"2026-11-03T05:08:38.228652Z"}],"ghsa":[{"id":"GHSA-g94w-7rpc-xf8m","title":"A memory corruption vulnerability in the QMqttClient class of the Qt MQTT module. Under certain...","description":"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.","status":"published","published":"2026-11-02T09:30:27Z","modified":"2026-11-02T09:30:38Z","cvss":[{"version":"4.0","score":2.3,"vector":"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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:U/V:X/RE:L/U:Green","level":"low"}],"cwes":["CWE-129"],"updated_at":"2026-11-02T15:14:55.927217Z"}],"nvd":[{"id":"CVE-2026-107457","description":"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.","status":"published","published":"2026-11-02T09:17:36.43Z","modified":"2026-11-02T20:17:27.777Z","cvss":[{"version":"4.0","score":2.3,"vector":"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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:U/V:X/RE:L/U:Green","level":"low","assessor":"secondary"}],"cwes":["CWE-129","CWE-787"],"updated_at":"2026-11-03T00:02:42.364722Z"}]}}