{"id":"CVE-2026-101201","title":"qt5-qtbase: qt6-qt5compat: 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 7","affected":["enterprise_linux 10","enterprise_linux 7","enterprise_linux 8","enterprise_linux 9","hardened_images"],"published":"2026-10-20","updated":"2026-10-23","sourceUpdated":"2026-10-23T19:20:43+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"],"epss":0.00165,"epssPercentile":0.05657,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-20T15:56:09.910743Z"},"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 Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat Hardened Images · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, … · updated 2026-10-23 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-101201.json)\n\n**qt5-qtbase: qt6-qt5compat: qt: Denial of Service via out-of-bounds read in QBinaryJson** — rated Moderate by Red Hat. Released 2026-10-20, updated 2026-10-23.\n\nAffected:\n\n- Red Hat Enterprise Linux 10\n- Red Hat Enterprise Linux 7\n- Red Hat Enterprise Linux 8\n- Red Hat Enterprise Linux 9\n- Red Hat Hardened Images\n\nNo fix planned:\n\n- Red Hat Enterprise Linux 10\n- Red Hat Enterprise Linux 7\n- Red Hat Enterprise Linux 8\n- Red Hat Enterprise Linux 9\n- Red Hat Hardened Images\n\nNot affected:\n\n- Red Hat Hardened Images\n\n## Remediation\n\nFix deferred\n\nWorkarounds / mitigations:\n\n- Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":228662,"id":"CVE-2026-101201","ts":1792844864085,"field":"cvss","old":"4.3","new":"5.5"},{"seq":225954,"id":"CVE-2026-101201","ts":1792512690944,"field":"cvss","old":"5.5","new":"4.3"},{"seq":225667,"id":"CVE-2026-101201","ts":1792498347608,"field":"cvss","old":"4.3","new":"5.5"}]}