CVE-2026-63275 — Stack buffer overflow in CFF font hint handling

CVE-2026-63275

Stack buffer overflow in CFF font hint handling PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
The Document Foundation / LibreOffice	affected 26.2 before < 26.2.5

CWE

CWE-787

References

https://www.libreoffice.org/about-us/security/advisories/cve-2026-63275

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.