# CVE-2026-6039

## Summary

- **CVE ID:** CVE-2026-6039
- **Severity:** MEDIUM
- **CVSS Score:** 5.4 (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)
- **CWE:** CWE-787, CWE-197
- **Published:** Jun 15, 2026
- **Last Modified:** Jun 15, 2026

## Description

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 Products

- The Document Foundation — LibreOffice (25.8)
- The Document Foundation — LibreOffice (26.2)

## References

- [CNA](https://www.libreoffice.org/about-us/security/advisories/cve-2026-6039)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.16%
- **EPSS Percentile:** 5.2

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._