{"id":"CVE-2026-101201","title":"qt6: qt: Denial of Service via out-of-bounds read in QBinaryJson (CVE-2026-101201)","summary":"A flaw was found in Qt. An out-of-bounds read vulnerability can occur when parsing a binary file with a malformed header in the QBinaryJson::fromBinaryData() function. An attacker could exploit this flaw by convincing a user or application…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":["CWE-125","CWE-190"],"vendor":"Red Hat","product":"Red Hat Enterprise Linux 10","affected":["enterprise_linux 10","hardened_images"],"published":"2026-10-20","updated":"2026-10-20","sourceUpdated":"2026-10-20T09:36:26+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-101201.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-101201.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-101201"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2556033"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-101201"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-101201"},{"url":"https://codereview.qt-project.org/c/qt/qt5compat/+/758925"},{"url":"https://codereview.qt-project.org/c/qt/qt5compat/+/759230"},{"url":"https://wiki.qt.io/List_of_known_vulnerabilities_in_Qt_products#CVE-2026-101201"}],"tags":["csaf","vex","red-hat","cve.org"],"scores":{"vendor":5.5,"cna":4.3},"ingestedAt":"2026-10-20T12:05:07.357Z","slug":"CVE-2026-101201","body":"## Overview\n\nA flaw was found in Qt. An out-of-bounds read vulnerability can occur when parsing a binary file with a malformed header in the QBinaryJson::fromBinaryData() function. An attacker could exploit this flaw by convincing a user or application to process a specially crafted binary file, causing the application to crash and resulting in a Denial of Service (DoS).\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Hardened Images · no fix planned: Red Hat Enterprise Linux 10, Red Hat Hardened Images · updated 2026-10-20 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-101201.json)\n\n**qt6: qt: Denial of Service via out-of-bounds read in QBinaryJson** — rated Moderate by Red Hat. Released 2026-10-20.\n\nAffected:\n\n- Red Hat Enterprise Linux 10\n- Red Hat Hardened Images\n\nNo fix planned:\n\n- Red Hat Enterprise Linux 10\n- Red Hat Hardened Images\n\n## Remediation\n\nFix deferred","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":225667,"id":"CVE-2026-101201","ts":1792498347608,"field":"cvss","old":"4.3","new":"5.5"}]}