CVE-2019-9855: Libreoffice

Critical severity, CVSS 9.8. EPSS: 2.6% chance of exploitation in the next 30 days.

LibreOffice is typically bundled with LibreLogo, a programmable turtle vector graphics script, which can execute arbitrary python commands contained with the document it is launched from. LibreOffice also has a feature where documents can specify that pre-installed scripts can be executed on various document script events such as mouse-over, etc. Protection was added to block calling LibreLogo from script event handers. However a Windows 8.3 path equivalence handling flaw left LibreOffice vulnerable under Windows that a document could trigger executing LibreLogo via a Windows filename pseudonym. This issue affects: Document Foundation LibreOffice 6.2 versions prior to 6.2.7; 6.3 versions prior to 6.3.1.

Affected products

• Libreoffice Libreoffice: from 6.2.0, before 6.2.7 (fixed in 6.2.7); from 6.3.0, before 6.3.1 (fixed in 6.3.1)
• Opensuse Leap: version 15.0 only; version 15.1 only

Published 2019-09-06. Last modified 2026-06-17.