CVE-2026-63275 Affecting libreoffice package, versions <4:26.2.5.2-1


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.19% (8th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-LIBREOFFICE-20046965
  • published23 Sept 2026
  • disclosed22 Sept 2026

Introduced: 22 Sep 2026

NewCVE-2026-63275  (opens in a new tab)

How to fix?

Upgrade Debian:unstable libreoffice to version 4:26.2.5.2-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libreoffice package and not the libreoffice package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1