{"id":"CVE-2026-63276","published":"2026-09-22T12:17:13.547","lastModified":"2026-09-22T19:09:32.273","description":"LibreOffice converts CFF fonts to Type 1 when it subsets a font, which happens when a document is exported to PDF, and CFF fonts may be embedded in documents. A stack buffer overflow existed in that conversion. The converted operators were written into a fixed size buffer with no check that they still fit, so a glyph emitting many operators wrote past the end of the buffer. In fixed versions the remaining capacity is tracked and the conversion stops when it is used up.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":["CWE-787"],"vendors":[],"products":[],"references":[{"url":"https://www.libreoffice.org/about-us/security/advisories/cve-2026-63276","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}