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
Conclusion & alert: CVE-2025-64401 is rated Moderate Risk (44.7/100): CVSS High severity, with low exploitation likelihood (EPSS 0.20%). 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 | 2026-05-11 | 0.11% | 0.20% | +0.09% |
| 2 | 2026-04-09 | 0.16% | 0.11% | -0.05% |
| 3 | 2026-03-14 | — | 0.16% | — |
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 | 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/o00dtgvhr9tx8r4y8vf6y2mg7nn6mx6c | Mailing List Vendor Advisory |
| https://www.openoffice.org/security/cves/CVE-2025-64401.html | Vendor Advisory |