---
id: CVE-2026-63274
title: LibreOffice Draw can import PDF documents
summary: >-
  LibreOffice Draw can import PDF documents. A heap buffer overflow existed when
  importing a stream object. The length of the stream was taken from the
  object's own dictionary and was not checked against the number of bytes
  actually presen…
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-125
  - CWE-787
  - CWE-120
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-2026-63274'
references:
  - url: 'https://www.libreoffice.org/about-us/security/advisories/cve-2026-63274'
    label: security@documentfoundation.org
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-63274.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-63274'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2537936'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-63274'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-63274'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-22T12:25:42.703259Z'
cvssSource: cna
ingestedAt: '2026-09-22T12:03:01.594Z'
scores:
  cna: 5.4
  vendor: 7.3
epss: 0.00167
epssPercentile: 0.05279
---

## Overview

LibreOffice Draw can import PDF documents. A heap buffer overflow existed when importing a stream object. The length of the stream was taken from the object's own dictionary and was not checked against the number of bytes actually present, so copying the stream read and wrote past the end of the buffer holding it. In fixed versions the declared length is clamped to the bytes actually read.

## Remediation

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

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · updated 2026-09-24 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-63274.json)