USN-8868-1: LibreOffice vulnerabilities

Publication date

5 October 2026

Overview

Several security issues were fixed in LibreOffice.


Packages

Details

It was discovered that LibreOffice incorrectly handled WMF image
imports. An attacker could possibly use this issue to cause LibreOffice
to crash, resulting in a denial of service, or execute arbitrary code.
(CVE-2026-63272)

It was discovered that LibreOffice incorrectly handled PDF document
imports. An attacker could possibly use this issue to cause LibreOffice
to crash, resulting in a denial of service, or execute arbitrary code.
(CVE-2026-63273, CVE-2026-63274)

It was discovered that LibreOffice incorrectly handled CFF fonts
embedded in documents. An attacker could possibly use this issue to
cause LibreOffice to crash, resulting in a denial of service, or
execute arbitrary code. (CVE-2026-63275, CVE-2026-63276)

It was discovered...

It was discovered that LibreOffice incorrectly handled WMF image
imports. An attacker could possibly use this issue to cause LibreOffice
to crash, resulting in a denial of service, or execute arbitrary code.
(CVE-2026-63272)

It was discovered that LibreOffice incorrectly handled PDF document
imports. An attacker could possibly use this issue to cause LibreOffice
to crash, resulting in a denial of service, or execute arbitrary code.
(CVE-2026-63273, CVE-2026-63274)

It was discovered that LibreOffice incorrectly handled CFF fonts
embedded in documents. An attacker could possibly use this issue to
cause LibreOffice to crash, resulting in a denial of service, or
execute arbitrary code. (CVE-2026-63275, CVE-2026-63276)

It was discovered that LibreOffice incorrectly validated package URLs.
An attacker could possibly use this issue to obtain sensitive
information. (CVE-2026-63278)

It was discovered that LibreOffice incorrectly handled PICT image
imports. An attacker could possibly use this issue to cause LibreOffice
to crash, resulting in a denial of service, or obtain sensitive
information. (CVE-2026-63279)

It was discovered that LibreOffice incorrectly mitigated out-of-bounds
writes via Graphite font actions. An attacker could possibly use this
issue to cause LibreOffice to crash, resulting in a denial of service,
or execute arbitrary code. (CVE-2026-50593)


Update instructions

This update uses a new upstream release, which includes additional bug fixes. In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
26.04 LTS resolute libreoffice –  4:26.2.6.3-0ubuntu0.26.04.2
24.04 LTS noble libreoffice –  4:24.2.7-0ubuntu0.24.04.7
22.04 LTS jammy libreoffice –  1:7.3.7-0ubuntu0.22.04.13

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.


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