CVE-2026-63275Medium· 5.4▾ SunlitLibreOffice can read CFF fonts, which may be embedded in documents. A stack buffer overflow existed when reading the hints of a glyph. The number of hints was checked against the wrong bound, so a glyph declaring more hints than the arra…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 29.7 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Exploit-prediction probability, daily snapshots since Sep 24.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.2%
0.2% → 0.2%
LibreOffice can read CFF fonts, which may be embedded in documents. A stack buffer overflow existed when reading the hints of a glyph. The number of hints was checked against the wrong bound, so a glyph declaring more hints than the array can hold wrote past its end. In fixed versions the hint count is checked against the capacity the array really has.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-63276Medium· 5.4LibreOffice 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
CVE-2026-63274Medium· 5.4LibreOffice Draw can import PDF documents
CVE-2026-63277High· 8.5LibreOffice Calc can link a cell range to an external data source, and the link is saved in the document
CVE-2026-63266Medium· 6.8LibreOffice Calc can link a cell range to an external data source, and the link is saved in the document
CVE-2026-63267Medium· 6.7LibreOffice Calc can link a cell range to an external csv data source, and the link is saved in the document
CVE-2026-63268Medium· 6.7LibreOffice Calc can link a cell range to an external data source, and the link is saved in the document