What is CVE-2025-64403?

CVE-2025-64403 is a high-severity vulnerability in Apache Openoffice, classified under Missing Authorization. CVSS score: 8.1/10. Published 2025-11-12.

How severe is CVE-2025-64403?

High severity. CVSS v3 base score is 8.1 out of 10.

Auth bypass in Apache Openoffice

CVE-2025-64403

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.

Vulnerability class: Broken Access Control

EPSS: 0.013 (67.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N.

Affected products

Apache Openoffice
Apache Software Foundation Openoffice — versions 0

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

security@apache.org (vendor-advisory, Vendor Advisory)
security@apache.org (vendor-advisory, Mailing List, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2025-64403?: CVE-2025-64403 is a high-severity vulnerability in Apache Openoffice, classified under Missing Authorization. CVSS score: 8.1/10. Published 2025-11-12.
How severe is CVE-2025-64403?: High severity. CVSS v3 base score is 8.1 out of 10.