CVE-2026-4430

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{"bugzilla": {"description": "LibreOffice: LibreOffice: Denial of Service via crafted OOXML documents", "id": "2467657", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467657"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.6", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H", "status": "draft"}, "cwe": "CWE-787", "details": ["A flaw was found in LibreOffice. A remote attacker could exploit this out-of-bounds write vulnerability by tricking a user into opening a specially crafted OOXML (Office Open XML) document with mismatched encryption salt parameters. This could lead to a denial of service (DoS), making the application unavailable, and potentially result in limited information disclosure or integrity impact."], "mitigation": {"lang": "en:us", "value": "Users are advised to avoid opening untrusted or suspicious OOXML documents. This operational control reduces the risk of exploitation by preventing the vulnerable LibreOffice component from processing malicious input."}, "name": "CVE-2026-4430", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Affected", "package_name": "libreoffice", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "libreoffice", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "libreoffice", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "libreoffice", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-05-07T07:16:18Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-4430\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-4430\nhttps://www.libreoffice.org/about-us/security/advisories/cve-2026-4430"], "threat_severity": "Moderate"}

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