Authorization Vulnerability in Apache OpenOffice Allows External Links to Load Unprompted
CVE-2025-64405

7.5HIGH

Key Information:

Vendor

Apache
Status
Apache Openoffice
Vendor
CVE Published:
12 November 2025

What is CVE-2025-64405?

A vulnerability in Apache OpenOffice allows attackers to create documents with links that can automatically load external content without user consent. This issue arises specifically in Calc spreadsheets containing DDE links, which can be exploited to access sensitive information from external files. Users of Apache OpenOffice versions up to 4.1.15 are advised to upgrade to version 4.1.16 to mitigate this security risk.

Affected Version(s)

Apache OpenOffice 0 <= 4.1.15

References

https://www.openoffice.org/security/cves/CVE-2025-64405.html
vendor-advisory
https://lists.apache.org/thread/0jjftxkcc4l9kt7jjn630hfrh...
vendor-advisory

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Louis Bettels, Technische Universität Braunschweig
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