OpenOffice <=4.1.15: Auto-load DDE External Links without Prompt (Missing Auth)
CVE-2025-64405 Published on November 12, 2025
Apache OpenOffice: Remote documents loaded without prompt via DDE function
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, Calc spreadsheet containing DDE links to external files would
load the contents of those files 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.
Vulnerability Analysis
CVE-2025-64405 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality, a high impact on integrity, and no impact on availability.
Weakness Type
What is an AuthZ Vulnerability?
The software does not perform an authorization check when an actor attempts to access a resource or perform an action.
CVE-2025-64405 has been classified to as an AuthZ vulnerability or weakness.
Products Associated with CVE-2025-64405
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Affected Versions
Apache Software Foundation Apache OpenOffice:- Before and including 4.1.15 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.