CVE-2025-64403

Name: CVE-2025-64403
Creator: NVD / NIST
Published: 2025-11-12T09:15:41.343+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.1/10EPSS 1.31%

Last modified Jun 17, 2026

CVE-2025-64403 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. 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.. EPSS estimates a 1.31% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

8.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

EPSS Probability

1.31%

67.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-862

Affected Software

Vendor	Product	Versions
Apache	Openoffice	< 4.1.16

References

https://lists.apache.org/thread/t7c6jhvdb00xtgd9vvn7h5sq9f4h5trtMailing List, Vendor Advisory
https://www.openoffice.org/security/cves/CVE-2025-64403.htmlVendor Advisory
http://www.openwall.com/lists/oss-security/2025/11/11/6Mailing List, Third Party Advisory

Timeline

Published: Nov 12, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-64403?

How severe is CVE-2025-64403?

CVE-2025-64403 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 1.31% probability of exploitation in the next 30 days.

How do I fix CVE-2025-64403?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-64403?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST