🛡️ CVE-2026-6039 on Ubuntu — libreoffice

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Distribution advisory

This page covers CVE-2026-6039 as tracked by Ubuntu, for the package libreoffice. The fix is available in version 4:26.2.4.2-0ubuntu0.26.04.2; earlier versions remain affected.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs no privileges on the target. A user must be tricked into taking some action. Rated impact: confidentiality low, integrity low, availability high.

Affected software

UBUNTU-CVE-2026-6039 is recorded against 1 package.

  • libreoffice (fixed in 4:26.2.4.2-0ubuntu0.26.04.2)

Timeline and source

Published on 15 June 2026 and last revised on 14 July 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

ubuntu.com (Report)
www.cve.org (Report)
www.libreoffice.org (Report)
ubuntu.com (Advisory)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector 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 N/A
Public Exploit ✅ No
Source OSV
Published 2026-06-15
Updated 2026-08-12
Modified 2026-07-14
Fix URL N/A

Affected Packages

Software From version Fixed in
libreoffice — 4:26.2.4.2-0ubuntu0.26.04.2

Similar Threats

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