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CVE-2017-11402

Published: Nov 20, 2017Updated: May 13, 2026 Sources: CVE List NVD BDUCWE-20
NVD MITRE
9.8CVSSCRITICAL
EPSS Score
1.5%
Top 28.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

An issue has been discovered on the Belden Hirschmann Tofino Xenon Security Appliance before 03.2.00. Design flaws in OPC classic and in custom netfilter modules allow an attacker to remotely activate rules on the firewall and to connect to any TCP port of a protected asset, thus bypassing the firewall. The attack methodology is a crafted OPC dynamic port shift.

CVSS Vector Breakdown

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

CWE-20

Affected Products

n/an/a
Tofino Xenon Security ApplianceBelden Inc.
Embedded
Networking Infrastructure / network-management
tofino xenon security appliance firmwarebeldenNetworking Infrastructure
belden inc.commercialUSNetworking Infrastructureaka belden
beldencommercialUSNetworking Infrastructureaka belden hirschmann, tofino security appliance

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Initial Access
View detailed technique mapping

References

https://www.belden.com/hubfs/support/security/bulletins/Belden-Security-Bulletin-BSECV-2017-14-1v1-1.pdf
belden.com
https://github.com/airbus-seclab/security-advisories/blob/master/belden/tofino.txt
github.com
https://github.com/airbus-seclab/security-advisories/blob/master/belden/tofino.txt
github.com

Timeline

Published
Nov 20, 2017
Last Updated
May 13, 2026

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