CVE-2026-4430

Out-of-bounds write vulnerability in The Document Foundation LibreOffice via crafted OOXML documents with mismatched encryption salt parameters. This issue affects LibreOffice: from 26.2 before 26.2.3, from 25.8 before 25.8.7.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://www.libreoffice.org/about-us/security/advisories/cve-2026-4430	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:libreoffice:libreoffice::::::::
	cpe:2.3:a:libreoffice:libreoffice::::::::

History

08 May 2026, 16:48

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.8
References	~~() https://www.libreoffice.org/about-us/security/advisories/cve-2026-4430 -~~	() https://www.libreoffice.org/about-us/security/advisories/cve-2026-4430 - Vendor Advisory
CPE		cpe:2.3:a:libreoffice:libreoffice::::::::
First Time		Libreoffice Libreoffice libreoffice

07 May 2026, 14:52

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-07 08:16

Updated : 2026-05-08 16:48

NVD link : CVE-2026-4430

Mitre link : CVE-2026-4430

CVE.ORG link : CVE-2026-4430

JSON object : View

Products Affected

libreoffice

libreoffice

CWE

CWE-787

Out-of-bounds Write

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