ZDI-26-782: LibreOffice PDF File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability
Published Oct 16, 2026
·Updated
This vulnerability allows remote attackers to execute arbitrary code on affected installations of LibreOffice. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The ZDI has assigned a CVSS rating of 7.8. The following CVEs are assigned: CVE-2026-63274.
Affected Software
1 affected component
LibreOffice Libreoffice
Event History
Oct 16, 2026
Advisory Published
via ZDI·05:00 AM
Data Sourced
via ZDI·05:00 AM
Description
Frequently Asked Questions
1
What must an attacker do to exploit this issue?
The attacker must convince the target to visit a malicious page or open a malicious file. Successful exploitation can result in arbitrary code execution on the affected LibreOffice installation.
2
How severe is this vulnerability?
ZDI assigned this issue a CVSS score of 7.8, and the listed risk score is 67.