Oct 16, 2026 · Zero Day Initiative
Critical Remote Code Execution Vulnerability in LibreOffice
A significant remote code execution vulnerability has been identified in LibreOffice, requiring user interaction for exploitation.
What changed
A new vulnerability has been discovered in LibreOffice related to PDF file parsing, classified as an out-of-bounds write issue. This flaw allows remote attackers to execute arbitrary code on affected systems, posing a serious security risk.
The vulnerability has been assigned a CVSS score of 7.8, indicating its high severity. Users must be cautious, as exploitation requires them to open a malicious file or visit a compromised webpage.
Who is affected
The vulnerability impacts users of LibreOffice across various platforms, making it a widespread concern for organizations relying on this software.
Specifically, the following groups are at risk:
- All users of LibreOffice versions that include the vulnerable PDF parsing functionality.
- Organizations that utilize LibreOffice for document management and collaboration.
- Individuals who frequently open PDF files from untrusted sources.
What to do
It is crucial for users and administrators to take immediate action to mitigate the risks associated with this vulnerability. Regular updates and security patches should be prioritized.
Recommendations include:
- Update LibreOffice to the latest version as soon as patches are available.
- Educate users about the risks of opening files from unknown or untrusted sources.
- Implement security measures such as email filtering and web protection to block malicious content.