CVE-2026-63275: Stack buffer overflow in CFF font hint handling
The Document Foundation · LibreOffice
Vendor fix available · Affected: The Document Foundation LibreOffice · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 8% of scored CVEs
DescriptionCVE.org
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 products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- The Document Foundation · LibreOfficefrom 26.2 before < 26.2.5
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- The Document Foundation
- Published
- September 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-63275 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.