Apache OpenOffice Calc External Data Auth Bypass <4.1.15
CVE-2025-64403 Published on November 12, 2025
Apache OpenOffice: Remote documents loaded without prompt via "external data sources" in Calc
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 Analysis
CVE-2025-64403 can be exploited with network access, requires 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 a high impact on confidentiality and 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-2025-64403 has been classified to as an AuthZ vulnerability or weakness.
Products Associated with CVE-2025-64403
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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.