🛡️ CVE-2026-6045 on Ubuntu — libreoffice

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

Description

LibreOffice can import EMF+ graphics, which may be embedded in documents. A heap buffer overflow existed when importing an EMF+ gradient brush. The number of gradient blend points was read from the file and used to compute an allocation size, but that multiplication could overflow, so a small buffer was allocated and then filled as if it were large, writing past its end. In fixed versions the blend-point count is checked against the data actually available before allocating.

Distribution advisory

This page covers CVE-2026-6045 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-2026-6045 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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