🛡️ CVE-2026-6047 on Ubuntu — libreoffice

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

LibreOffice can import documents in the OOXML format (DOCX). A heap buffer overflow existed when replaying deferred parser events for a text box element. A handler object was assumed to be of one type and written to at that type's field layout, but it could be a smaller object, so the write landed past the end of the allocation. In fixed versions the type is checked before the write.

Distribution advisory

This page covers CVE-2026-6047 as tracked by Ubuntu, for the package libreoffice. The fix is available in version 4:26.2.4.2-0ubuntu0.26.04.2; earlier versions remain affected.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs no privileges on the target. A user must be tricked into taking some action. Rated impact: confidentiality low, integrity low, availability high.

Affected software and timeline

Affected software: libreoffice (fixed in 4:26.2.4.2-0ubuntu0.26.04.2). Published on 15 June 2026 and last revised on 14 July 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

ubuntu.com (Report)
www.cve.org (Report)
www.libreoffice.org (Report)

Details

Severity Unknown
CVSS Score N/A
CVSS 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
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2026-06-15
Updated 2026-08-11
Modified 2026-07-14
Fix URL N/A

Affected Packages

Software From version Fixed in
libreoffice — 4:26.2.4.2-0ubuntu0.26.04.2

Similar Threats

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