CVE-2026-63275
Medium
Description
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.
SeverityMedium
CVSS5.4
Exploit probability—
ProductLibreOffice
PublishedSep 22, 2026
First seenSep 22, 2026
Weakness typeCWE-787Out-of-bounds write
How to fix
Update
- The Document Foundation LibreOffice< 26.2.5 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| The Document Foundation LibreOffice | 26.2 ≤ v < < 26.2.5 | < 26.2.5 |
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