What’s Vulnerable › Vulnerabilities

CVE-2017-11401

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-11-20 · updated 2026-06-17

Description

An issue has been discovered on the Belden Hirschmann Tofino Xenon Security Appliance before 03.2.00. Improper handling of the mbap.length field of ModBus packets in the ModBus DPI filter allows an attacker to send malformed/crafted packets to a protected asset, bypassing function code filtering.

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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