Red Hat Security Advisory: libreoffice security update
LibreOffice is an open source, community-developed office productivity suite. It includes key desktop applications, such as a word processor, a spreadsheet, a presentation manager, a formula editor, and a drawing program. LibreOffice replaces OpenOffice and provides a similar but enhanced and extended office suite. Security Fix(es): * LibreOffice: LibreOffice: Denial of Service via crafted OOXML documents (CVE-2026-4430) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
AI Analysis
Technical Summary
CVE-2026-4430 is a denial of service vulnerability in LibreOffice triggered by specially crafted OOXML documents. The issue is tracked by Red Hat Product Security under advisory RHSA-2026:28290 and affects LibreOffice versions included in Red Hat Enterprise Linux 9 and related variants. The vulnerability is categorized under CWE-787 (Out-of-bounds Write). Red Hat has issued a security update to remediate this vulnerability.
Potential Impact
An attacker could cause a denial of service by providing a crafted OOXML document to LibreOffice, potentially disrupting normal application operation. No evidence of exploitation in the wild is reported. The impact is rated as moderate by Red Hat.
Mitigation Recommendations
Red Hat has released an official security update for LibreOffice in Red Hat Enterprise Linux 9 to address this vulnerability. Users should apply the update as described in Red Hat advisory RHSA-2026:28290 and the referenced article https://access.redhat.com/articles/11258. No additional mitigation steps are indicated by the vendor.
Red Hat Security Advisory: libreoffice security update
Description
LibreOffice is an open source, community-developed office productivity suite. It includes key desktop applications, such as a word processor, a spreadsheet, a presentation manager, a formula editor, and a drawing program. LibreOffice replaces OpenOffice and provides a similar but enhanced and extended office suite. Security Fix(es): * LibreOffice: LibreOffice: Denial of Service via crafted OOXML documents (CVE-2026-4430) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-4430 is a denial of service vulnerability in LibreOffice triggered by specially crafted OOXML documents. The issue is tracked by Red Hat Product Security under advisory RHSA-2026:28290 and affects LibreOffice versions included in Red Hat Enterprise Linux 9 and related variants. The vulnerability is categorized under CWE-787 (Out-of-bounds Write). Red Hat has issued a security update to remediate this vulnerability.
Potential Impact
An attacker could cause a denial of service by providing a crafted OOXML document to LibreOffice, potentially disrupting normal application operation. No evidence of exploitation in the wild is reported. The impact is rated as moderate by Red Hat.
Mitigation Recommendations
Red Hat has released an official security update for LibreOffice in Red Hat Enterprise Linux 9 to address this vulnerability. Users should apply the update as described in Red Hat advisory RHSA-2026:28290 and the referenced article https://access.redhat.com/articles/11258. No additional mitigation steps are indicated by the vendor.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:28922
- Cve Count
- 1
- Additional Cves
- []
- Cvss Version
- null
Threat ID: 6a3c0ceaeed863c81e23731f
Added to database: 06/24/2026, 16:59:22 UTC
Last enriched: 07/10/2026, 12:49:44 UTC
Last updated: 08/08/2026, 00:41:13 UTC
Views: 152
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