CVE-2026-4430

7.8 HIGH

Published: May 07, 2026 Modified: May 08, 2026

Description

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

https://www.libreoffice.org/about-us/security/advisories/cve-2026-4430

Source: security@documentfoundation.org

Vendor Advisory

1 reference(s) from NVD

Quick Stats

CVSS v3 Score

7.8 / 10.0

EPSS (Exploit Probability)

0.1%

0th percentile

Exploitation Status

Not in CISA KEV

Weaknesses (CWE)

CWE-787

Affected Vendors

libreoffice

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