Red Hat Security Advisory: libreoffice security update
A denial of service vulnerability (CVE-2026-4430) exists in LibreOffice when processing crafted OOXML documents. This vulnerability could allow an attacker to cause a denial of service condition. Red Hat has issued a security update for LibreOffice in Red Hat Enterprise Linux 8 to address this issue. The update is rated as having a moderate security impact. No known exploits are reported in the wild at this time.
AI Analysis
Technical Summary
CVE-2026-4430 is a denial of service vulnerability in LibreOffice triggered by specially crafted OOXML documents. The vulnerability is identified as CWE-787 (Out-of-bounds Write). Red Hat Product Security has released an advisory (RHSA-2026:28922) describing this issue and providing updated LibreOffice packages for Red Hat Enterprise Linux 8 and related variants. The advisory rates the security impact as moderate and provides instructions for applying the update. No CVSS score is provided in the advisory, and no known exploits have been reported.
Potential Impact
Successful exploitation of this vulnerability could cause LibreOffice to crash or become unresponsive when opening malicious OOXML documents, resulting in a denial of service condition. There is no indication of code execution or data compromise from the provided information. No known active exploitation has been reported.
Mitigation Recommendations
Red Hat has released updated LibreOffice packages that address this vulnerability. Users of Red Hat Enterprise Linux 8 and related distributions should apply the available security update as described in the Red Hat advisory RHSA-2026:28922. Patch status is confirmed by the vendor advisory. No additional mitigation steps are indicated.
Red Hat Security Advisory: libreoffice security update
Description
A denial of service vulnerability (CVE-2026-4430) exists in LibreOffice when processing crafted OOXML documents. This vulnerability could allow an attacker to cause a denial of service condition. Red Hat has issued a security update for LibreOffice in Red Hat Enterprise Linux 8 to address this issue. The update is rated as having a moderate security impact. No known exploits are reported in the wild at this time.
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 vulnerability is identified as CWE-787 (Out-of-bounds Write). Red Hat Product Security has released an advisory (RHSA-2026:28922) describing this issue and providing updated LibreOffice packages for Red Hat Enterprise Linux 8 and related variants. The advisory rates the security impact as moderate and provides instructions for applying the update. No CVSS score is provided in the advisory, and no known exploits have been reported.
Potential Impact
Successful exploitation of this vulnerability could cause LibreOffice to crash or become unresponsive when opening malicious OOXML documents, resulting in a denial of service condition. There is no indication of code execution or data compromise from the provided information. No known active exploitation has been reported.
Mitigation Recommendations
Red Hat has released updated LibreOffice packages that address this vulnerability. Users of Red Hat Enterprise Linux 8 and related distributions should apply the available security update as described in the Red Hat advisory RHSA-2026:28922. Patch status is confirmed by the vendor advisory. No additional mitigation steps are indicated.
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: 06/24/2026, 17:00:36 UTC
Last updated: 06/24/2026, 19:36:43 UTC
Views: 3
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