Apache OpenOffice documents can contain links to other files. 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 background fill images, or bullet images, linked to external files would load the contents of those files 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.
Conclusion & alert: CVE-2025-64404 is rated Moderate Risk (42.9/100): CVSS High severity, with low exploitation likelihood (EPSS 0.16%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-04-22 | 0.12% | 0.16% | +0.04% |
| 2 | 2026-04-09 | 0.17% | 0.12% | -0.05% |
| 3 | 2026-03-14 | — | 0.17% | — |
Full EPSS history (7 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.5 | 3.1 | HIGH |
|
3.9 | 3.6 | [email protected] |
| 7.5 | 3.1 | HIGH |
|
3.9 | 3.6 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| apache | openoffice | < 4.1.16 | cpe:2.3:a:apache:openoffice:*:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/08n4mdx0pnhqsllnkc63d27sdgq3tygc | Mailing List Vendor Advisory |
| https://www.openoffice.org/security/cves/CVE-2025-64404.html | Vendor Advisory |
| http://www.openwall.com/lists/oss-security/2025/11/11/7 | Mailing List Third Party Advisory |