CVE-2026-6047: CWE-787 Out-of-bounds Write in The Document Foundation LibreOffice
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.
CVE-2026-6047: CWE-787 Out-of-bounds Write in The Document Foundation LibreOffice
Description
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.
CVSS v4.0
Score 5.4medium
Affected software
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Document Fdn.
- Date Reserved
- 2026-04-09T19:21:23.491Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a303db60b89be6888695b22
Added to database: 6/15/2026, 6:00:22 PM
Last updated: 6/15/2026, 6:00:47 PM
Views: 1
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