CVE-2016-4047

Severity: medium (CVSS 4.3 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2016-12-15 · updated 2026-06-17
Weakness: CWE-200

Description

An issue was discovered in Open-Xchange OX App Suite before 7.8.1-rev8. References to external Open XML document type definitions (.dtd resources) can be placed within .docx and .xslx files. Those resources were requested when parsing certain parts of the generated document. As a result an attacker can track access to a manipulated document. Usage of a document may get tracked and information about internal infrastructure may get exposed.

Affected products

Open-Xchange Appsuite: through 7.8.1

References

http://www.securityfocus.com/archive/1/538732/100/0/threaded
http://www.securitytracker.com/id/1036157
http://www.securityfocus.com/archive/1/538732/100/0/threaded
http://www.securitytracker.com/id/1036157

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