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CVE-2025-64403

Apache OpenOffice: Remote documents loaded without prompt via "external data sources" in Calc

Published: Nov 12, 2025Updated: Nov 13, 2025 Sources: CVE List NVD BDUCWE-862
8.1HIGH
NVD MITRE
EPSS Score
1.2%
Top 34.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:RS:UC:HI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-862

Affected Products

Apache Software Foundation
oss-project·USaka apache foundation
Apache OpenOfficeOn-premDesktop App
Consumer Software / productivity
OpenOfficeOn-premDesktop App
Consumer Software / productivity
apache
oss-project·USaka apache http server, apache httpd
openofficeOn-premWeb App
Web & CMS Plugins / cms-core

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Initial Access
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References

https://lists.apache.org/thread/t7c6jhvdb00xtgd9vvn7h5sq9f4h5trt
lists.apache.org
https://www.openoffice.org/security/cves/CVE-2025-64403.html
openoffice.org
http://www.openwall.com/lists/oss-security/2025/11/11/6
openwall.com
and 1 more references View all →

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