{"id":"CVE-2026-103653","aliases":["EUVD-2026-115724","GHSA-hj4c-cp68-82hw","openSUSE-SU-2026:22256-1"],"status":"published","title":"Out-of-bounds read vulnerability in CoAP message parsing impacts Qt CoAP","description":"An out-of-bounds read vulnerability in the Qt CoAP message parsing (QCoapInternalReply::createFromFrame()) of the Qt CoAP module. 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).","severity":{"version":"4.0","score":6.7,"vector":"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","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00291,"percentile":0.21999,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-125"],"published":"2026-11-03T07:35:45Z","modified":"2026-11-11T17:23:13Z","fixes":[{"ecosystem":"openSUSE:Leap 16.0","package":"qt6-coap","fixed_in":["6.9.1-bp160.2.1"],"sources":["osv"]},{"ecosystem":"openSUSE:Leap 16.0","package":"qt6-coap-docs","fixed_in":["6.9.1-bp160.2.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"openSUSE:Leap 16.0","package":"qt6-coap","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.9.1-bp160.2.1"}]}]},{"source":"osv","ecosystem":"openSUSE:Leap 16.0","package":"qt6-coap-docs","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.9.1-bp160.2.1"}]}]}],"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-2026-103653:","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"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-103653"},{"url":"https://github.com/advisories/GHSA-hj4c-cp68-82hw"},{"url":"","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1289206","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2026-103653","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2026-103653","title":"Out-of-bounds read vulnerability in CoAP message parsing impacts Qt CoAP","description":"An out-of-bounds read vulnerability in the Qt CoAP message parsing (QCoapInternalReply::createFromFrame()) of the Qt CoAP module. 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).","status":"published","published":"2026-11-03T07:35:45.306Z","modified":"2026-11-03T20:06:47.825Z","cvss":[{"version":"4.0","score":6.7,"vector":"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","level":"medium","assessor":"cna"}],"cwes":["CWE-125"],"updated_at":"2026-11-03T22:58:36.650985Z"}],"euvd":[{"id":"EUVD-2026-115724","description":"An out-of-bounds read vulnerability in the Qt CoAP message parsing (QCoapInternalReply::createFromFrame()) of the Qt CoAP module. 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).","status":"published","published":"2026-11-03T07:35:45Z","modified":"2026-11-03T20:06:47Z","cvss":[{"version":"4.0","score":6.7,"vector":"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","level":"medium"}],"updated_at":"2026-11-03T21:20:12.603156Z"}],"ghsa":[{"id":"GHSA-hj4c-cp68-82hw","title":"An out-of-bounds read vulnerability in the Qt CoAP message parsing (QCoapInternalReply:...","description":"An out-of-bounds read vulnerability in the Qt CoAP message parsing (QCoapInternalReply::createFromFrame()) of the Qt CoAP module. 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).","status":"published","published":"2026-11-03T09:31:41Z","modified":"2026-11-03T09:31:42Z","cvss":[{"version":"4.0","score":6.7,"vector":"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/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:Y/R:U/V:X/RE:L/U:Amber","level":"medium"}],"cwes":["CWE-125"],"updated_at":"2026-11-03T09:50:56.938855Z"}],"nvd":[{"id":"CVE-2026-103653","description":"An out-of-bounds read vulnerability in the Qt CoAP message parsing (QCoapInternalReply::createFromFrame()) of the Qt CoAP module. 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).","status":"published","published":"2026-11-03T08:17:13.83Z","modified":"2026-11-03T20:18:05.82Z","cvss":[{"version":"4.0","score":6.7,"vector":"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/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:Y/R:U/V:X/RE:L/U:Amber","level":"medium","assessor":"secondary"}],"cwes":["CWE-125"],"updated_at":"2026-11-03T22:58:51.822037Z"}],"osv":[{"id":"openSUSE-SU-2026:22256-1","title":"Security update for qt6-coap","description":"This update for qt6-coap fixes the following issues:\n\nChanges in qt6-coap:\n\n- CVE-2026-103653: out-of-bounds read vulnerability in the Qt CoAP message parsing (QCoapInternalReply:createFromFrame()) of the Qt CoAP module (boo#1289206)\n","status":"published","published":"2026-11-05T14:40:06Z","modified":"2026-11-11T17:23:13.711833024Z","updated_at":"2026-11-11T17:47:15.466074Z"}]}}