Buffer overflow in The Document Foundation Libreoffice

CVE-2026-63275

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.

Vulnerability class: Buffer Overflow

Published · last modified .

EPSS exploit prediction

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Affected products

Weakness classification (CWE)

References