{"schemaVersion":3,"id":"USN-4487-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"libx11 vulnerabilities\n\nTodd Carson discovered that libx11 incorrectly handled certain memory\noperations. A local attacker could possibly use this issue to escalate\nprivileges. (CVE-2020-14344)\n\nJayden Rivers discovered that libx11 incorrectly handled locales. A local\nattacker could possibly use this issue to escalate privileges.\n(CVE-2020-14363)","dates":{"published":"2020-09-02T13:05:00.000Z","modified":"2026-04-22T10:07:01.918Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":null,"severity":"unknown","version":null,"versionLabel":null,"source":null,"vector":null,"computed":false,"selection":"none"},"metrics":[]},"epss":{"probability":null,"percentile":null,"severity":"unknown","asOf":null,"change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[],"last30":[]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[],"affected":[{"vendor":"ubuntu","product":"libx11","name":"libx11","label":"libx11","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/libx11","purlType":"deb","versions":[{"text":"< 2:1.6.3-1ubuntu2.2","noFixRecorded":false,"fixedIn":null},{"text":"< 2:1.6.4-3ubuntu0.3","noFixRecorded":false,"fixedIn":null},{"text":"< 2:1.6.9-2ubuntu1.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2:1.6.3-1ubuntu2.2 | < 2:1.6.4-3ubuntu0.3 | < 2:1.6.9-2ubuntu1.1","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-4487-1","label":"ubuntu.com/security/notices/USN-4487-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2020-14344","label":"ubuntu.com/security/CVE-2020-14344","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-14363","label":"ubuntu.com/security/CVE-2020-14363","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2020-14344","CVE-2020-14363"],"downstream":[],"duplicates":[],"related":["CVE-2020-14344","CVE-2020-14363"]},"timeline":[{"kind":"published","date":"2020-09-02T13:05:00.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-04-22T10:07:01.918Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":0,"level":"minimal","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T19:34:42.467Z","stale":false,"partial":false}}