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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.012 (67.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 67.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000
Affected products
Weakness classification (CWE)
References
- www.openoffice.org/security/cves/CVE-2025-64403.html (vendor-advisory, Vendor Advisory)
- lists.apache.org/thread/t7c6jhvdb00xtgd9vvn7h5sq9f4h5trt (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.