CVE-2026-6039: Heap buffer overflow in DXF polyline import
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 9% of scored CVEs
DescriptionCVE.org
LibreOffice can import drawings in the DXF format used by CAD software. A heap buffer overflow existed when importing a DXF polyline. The point count taken from the file was truncated to a 16-bit value when the point buffer was sized, while the full count was used to fill it, so a polyline whose point count exceeded the 16-bit range was written past the end of the buffer. In fixed versions such oversized polylines are rejected.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- The Document Foundation · LibreOfficefrom 25.8 before < 25.8.7; from 26.2 before < 26.2.3
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
- June 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-6039 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.