What’s Vulnerable › Vulnerabilities

CVE-2017-11402

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-11-20 · updated 2026-06-17
• Weakness: CWE-20

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.

Affected products

• Belden Tofino Xenon Security Appliance Firmware: through 3.1.0

References

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

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