{"id":"CVE-2026-63272","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-63272","generatedAt":"2026-10-28T04:33:45.611Z","title":"A heap buffer overflow existed when importing a text record that carries its own character advance widths.","description":"LibreOffice can import WMF graphics, which may be embedded in documents. A heap buffer overflow existed when importing a text record that carries its own character advance widths. The count of advance values and the length of the text were read separately from the file and were not required to agree, so drawing the text walked the advance array by character position and ran past its end when the array was the shorter of the two. In fixed versions an advance array shorter than its text is ignored.","published":"2026-09-22T12:17:12.000Z","lastModified":"2026-09-22T19:09:32.000Z","status":"Deferred","sourceIdentifier":"security@documentfoundation.org","cvss":{"version":"4.0","score":5.4,"severity":"MEDIUM","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-125","CWE-787"],"affected":[],"epss":{"score":0.00204,"percentile":0.10263,"date":"2026-10-27","history":[{"date":"2026-09-23","score":0.00167,"percentile":0.06396}]},"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 (0.20%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-09-22T12:17:12.000Z","detail":{"score":"5.4","severity":"MEDIUM","publishedAt":"2026-09-22T12:17:11.853Z"},"summary":"New CVE, medium severity (CVSS 5.4)."}],"references":[{"url":"https://www.libreoffice.org/about-us/security/advisories/cve-2026-63272","source":"security@documentfoundation.org"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-63272","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."}