An out-of-bounds Write vulnerability in Apache OpenOffice could allow an attacker to craft a document that would crash the program, or otherwise corrupt other memory areas. 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-2025-64406 is rated Low Risk (26.3/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.09%). Mandatory action: Monitor for updates and reassess as exploit intelligence or EPSS changes.
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 | 2025-11-14 | 0.02% | 0.09% | +0.07% |
| 2 | 2025-11-12 | — | 0.02% | — |
Full EPSS history (2 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 4.3 | 3.1 | MEDIUM |
|
2.8 | 1.4 | 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/py89gpogxfb2yo9c5vwv2h9x3m85pfmm | Issue Tracking Vendor Advisory |
| https://www.openoffice.org/security/cves/CVE-2025-64406.html | Vendor Advisory |
| http://www.openwall.com/lists/oss-security/2025/11/11/9 | Mailing List Third Party Advisory |