---
id: CVE-2026-63273
title: LibreOffice Draw can import PDF documents
summary: >-
  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 ke…
severity: medium
cvss: 5.4
cvssVector: 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:P'
cwe:
  - CWE-787
vendor: The Document Foundation
product: LibreOffice
affected:
  - LibreOffice >= 26.2 < < 26.2.5
published: '2026-09-22'
updated: '2026-09-22'
sourceUpdated: '2026-09-22T19:09:32.273'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-63273'
references:
  - url: 'https://www.libreoffice.org/about-us/security/advisories/cve-2026-63273'
    label: security@documentfoundation.org
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-22T12:27:28.185839Z'
cvssSource: cna
ingestedAt: '2026-09-22T12:03:01.595Z'
epss: 0.00108
epssPercentile: 0.0135
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.