CVE-2025-64403

High

Description

Apache OpenOffice Calc spreadsheet can contain links to other files, in the form of "external data sources". A missing Authorization vulnerability in Apache OpenOffice allowed an attacker to craft a document that would cause such links to be loaded without prompt. This issue affects Apache OpenOffice: through 4.1.15. Users are recommended to upgrade to version 4.1.16, which fixes the issue.

SeverityHigh

CVSS8.1

Exploit probability—

Product

Apache Openoffice

PublishedNov 12, 2025

First seenNov 12, 2025

Weakness typeCWE-862Missing authorization

How to fix

Update

apache openoffice4.1.16 or later

Vendor advisories

openoffice.org/security/cves/CVE-2025-64403.html
lists.apache.org/thread/t7c6jhvdb00xtgd9vvn7h5sq9f4h5trt

Affected products

Product	Affected versions	Fixed in
apache openoffice	v < 4.1.16	4.1.16

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