CVE-2026-6047 — Heap buffer overflow in OOXML text box element import
LibreOffice can import documents in the OOXML format (DOCX). A heap buffer overflow existed when replaying deferred parser events for a text box element. A handler object was as…
Published: 2026-06-15 · CVSS: 5.4 · CVSS 4.0
LibreOffice can import documents in the OOXML format (DOCX). A heap buffer overflow existed when replaying deferred parser events for a text box element. A handler object was assumed to be of one type and written to at that type's field layout, but it could be a smaller object, so the write landed past the end of the allocation. In fixed versions the type is checked before the write.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7