VulnerabilityDeferred

CVE-2026-6039

A heap buffer overflow existed when importing a DXF polyline.

MEDIUM 5.4EPSS 0.16%

Does this matter?

Lower severity and a low EPSS score (0.16%). Track it; it rarely justifies an emergency change on its own.

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.

CVSS 4.0: 5.4 MEDIUMCVSS: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/M
EPSS: 0.16% probability · 5th percentile
CISA KEV: Not listed
Weakness: CWE-197, CWE-787
Source: security@documentfoundation.org

References

https://www.libreoffice.org/about-us/security/advisories/cve-2026-6039

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.