CVE-2026-63273
Heap buffer overflow in PDF import encryption handling
Description
LibreOffice Draw can import PDF documents. A heap buffer overflow existed when importing an encrypted document. The length of the decryption key was taken from the document's own encryption dictionary and was used to fill a fixed size key buffer without being checked against it, so a length larger than that buffer wrote past its end. In fixed versions a declared key length larger than the buffer is rejected.
No summary for this CVE yet.
Weaknesses
Affected Products
The Document Foundation
oss-project·NLaka tdf, document foundation
Exploitability
No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
Attack Graph
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MITRE ATT&CK
2 techniques Initial Access
Privilege Escalation
References
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