CVEvulnerability

CVE-2026-63276

5.4 MEDIUM Published 2026-09-22 Modified 2026-09-22 Official page ↗
Status
Deferred
Published
2026-09-22
Last modified
2026-09-22
Assigner
[email protected]
CVSS 4.0 ([email protected])
5.4 MEDIUM — CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weaknesses
CWE-787

Description

LibreOffice converts CFF fonts to Type 1 when it subsets a font, which happens when a document is exported to PDF, and CFF fonts may be embedded in documents. A stack buffer overflow existed in that conversion. The converted operators were written into a fixed size buffer with no check that they still fit, so a glyph emitting many operators wrote past the end of the buffer. In fixed versions the remaining capacity is tracked and the conversion stops when it is used up.

Related

Weakness · CWE (1)

  • CWE-787 Out-of-bounds Write weakness

References