ZDI-26-782: LibreOffice PDF File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability
ZDI disclosed a LibreOffice PDF parsing overflow that can enable remote code execution.
The Zero Day Initiative published ZDI-26-782, a heap-based buffer overflow in LibreOffice PDF parsing that can lead to remote code execution. Exploitation requires a user to open a malicious file or visit a malicious page. ZDI rated the issue CVSS 7.8 and assigned CVE-2026-63274. The advisory does not report observed exploitation.
- ZDI-26-782 covers a heap-based buffer overflow while parsing PDFs.
- Successful exploitation can allow remote arbitrary code execution.
- The target must open a malicious file or visit a malicious page.
- ZDI assigned CVSS 7.8 and CVE-2026-63274.
- CVEs
- CVE-2026-63274
- Vendors
- The Document Foundation
- Products
- LibreOffice
- Organizations
- Zero Day Initiative
Vulnerabilities mentioned
All| CVE | Vulnerability | CVSS | EPSS | Signals | Published |
|---|---|---|---|---|---|
| CVE-2026-63274 | Heap buffer overflow in LibreOffice Draw PDF import | 5.4 | — |
From the original article
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.
zerodayinitiative.com
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