Description
LibreOffice can import WMF graphics, which may be embedded in documents. A heap buffer overflow existed when importing a text record that carries its own character advance widths. The count of advance values and the length of the text were read separately from the file and were not required to agree, so drawing the text walked the advance array by character position and ran past its end when the array was the shorter of the two. In fixed versions an advance array shorter than its text is ignored.
Published: 2026-09-22
Score: 5.4 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Debian DSA Debian DSA DSA-6512-1 libreoffice security update
History

Wed, 23 Sep 2026 12:30:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

cvssV3_1

{'score': 6.6, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H'}

threat_severity

Moderate


Tue, 22 Sep 2026 19:45:00 +0000

Type Values Removed Values Added
First Time appeared The Document Foundation
The Document Foundation libreoffice
Vendors & Products The Document Foundation
The Document Foundation libreoffice

Tue, 22 Sep 2026 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 22 Sep 2026 11:30:00 +0000

Type Values Removed Values Added
Description LibreOffice can import WMF graphics, which may be embedded in documents. A heap buffer overflow existed when importing a text record that carries its own character advance widths. The count of advance values and the length of the text were read separately from the file and were not required to agree, so drawing the text walked the advance array by character position and ran past its end when the array was the shorter of the two. In fixed versions an advance array shorter than its text is ignored.
Title Heap buffer overflow in WMF text record import
Weaknesses CWE-125
CWE-787
References
Metrics cvssV4_0

{'score': 5.4, 'vector': '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'}


Subscriptions

The Document Foundation Libreoffice
cve-icon MITRE

Status: PUBLISHED

Assigner: Document Fdn.

Published:

Updated: 2026-09-22T12:28:29.813Z

Reserved: 2026-07-16T08:17:05.511Z

Link: CVE-2026-63272

cve-icon Vulnrichment

Updated: 2026-09-22T12:28:21.895Z

cve-icon NVD

Status : Deferred

Published: 2026-09-22T12:17:11.853

Modified: 2026-09-22T19:09:32.273

Link: CVE-2026-63272

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-09-22T11:10:03Z

Links: CVE-2026-63272 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-09-22T19:15:23Z

Weaknesses