{"id":"CVE-2019-18281","url":"https://www.cyber-defence.io/tools/cve/CVE-2019-18281","generatedAt":"2026-10-27T21:18:39.810Z","title":"An out-of-bounds memory access in the generateDirectionalRuns() function in qtextengine.cpp in Qt qtbase 5.11.x and 5.12.x before 5.12.5 allows attackers to cause a denial of service by crashing an application via a text file containing many directional…","description":"An out-of-bounds memory access in the generateDirectionalRuns() function in qtextengine.cpp in Qt qtbase 5.11.x and 5.12.x before 5.12.5 allows attackers to cause a denial of service by crashing an application via a text file containing many directional characters.","published":"2019-10-23T15:15:14.000Z","lastModified":"2026-06-17T02:24:45.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":4.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L"},"cwe":["CWE-119"],"affected":["qt/qtbase","debian/debian linux"],"epss":{"score":0.0205,"percentile":0.81098,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (2.05%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://bugreports.qt.io/browse/QTBUG-77819","tags":["Permissions Required"],"source":"cve@mitre.org"},{"url":"https://bugs.launchpad.net/ubuntu/+source/qtbase-opensource-src/+bug/1848784","tags":["Issue Tracking","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://codereview.qt-project.org/c/qt/qtbase/+/271889","tags":["Patch","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://seclists.org/bugtraq/2019/Nov/4","tags":["Mailing List","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://security.gentoo.org/glsa/202003-60","source":"cve@mitre.org"},{"url":"https://usn.ubuntu.com/4275-1/","source":"cve@mitre.org"},{"url":"https://www.debian.org/security/2019/dsa-4556","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://bugreports.qt.io/browse/QTBUG-77819","tags":["Permissions Required"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugs.launchpad.net/ubuntu/+source/qtbase-opensource-src/+bug/1848784","tags":["Issue Tracking","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://codereview.qt-project.org/c/qt/qtbase/+/271889","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://seclists.org/bugtraq/2019/Nov/4","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.gentoo.org/glsa/202003-60","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/4275-1/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.debian.org/security/2019/dsa-4556","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2019-18281","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}