CVE-2025-64401: Apache OpenOffice: Remote documents loaded without prompt via IFrame

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-11-12 · updated 2026-10-18
Weakness: CWE-862

Description

Apache OpenOffice documents can contain links. A missing Authorization vulnerability in Apache OpenOffice allowed an attacker to craft a document that would cause external links to be loaded without prompt. In the affected versions of Apache OpenOffice, documents that used "floating frames" linked to external files would load the contents of those frames without prompting the user for permission to do so. This issue affects Apache OpenOffice: through 4.1.15. Users are recommended to upgrade to version 4.1.16, which fixes the issue. The LibreOffice suite reported this issue as CVE-2023-2255

Affected products

Apache Software Foundation Apache OpenOffice: before 4.1.16 — fixed in 4.1.16

How to fix

Upgrade to a fixed version: Apache Software Foundation Apache OpenOffice 4.1.16. Check the vendor advisory for mitigations.

References

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