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CVE-2016-6853

Published: Dec 15, 2016Updated: May 6, 2026 Sources: CVE List NVDCWE-79
NVD MITRE
6.1CVSSMEDIUM
EPSS Score
2.4%
Top 17.8%
CISA KEV
Not in KEV
Exploits
2 Known
Remediation
No Fix Available

Description

An issue was discovered in Open-Xchange OX Guard before 2.4.2-rev5. Script code and references to external websites can be injected to the names of PGP public keys. When requesting that key later on using a specific URL, such script code might get executed. In case of injecting external websites, users might get lured into a phishing scheme. Malicious script code can be executed within a user's context. This can lead to session hijacking or triggering unwanted actions via the web interface (sending mail, deleting data etc.).

CVSS Vector Breakdown

AV:NAC:LPR:NUI:RS:CC:LI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:CScope
Changed
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-79

Affected Products

ox guardopen-xchangeCommunications
n/an/a
open-xchangecommercialDECommunicationsaka open-xchange gmbh, ox

Attack Graph

Products CVE Techniques Tactics

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Exploitability

2 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

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MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

http://packetstormsecurity.com/files/138701/Open-Xchange-Guard-2.4.2-Cross-Site-Scripting.html
packetstormsecurity.com
http://www.securityfocus.com/archive/1/539395/100/0/threaded
securityfocus.com
http://www.securityfocus.com/bid/92920
securityfocus.com
and 1 more references View all →

Timeline

Published
Dec 15, 2016
Last Updated
May 6, 2026

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