How severe is CVE-2017-11401?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2017-11401 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Belden Tofino Xenon Security Appliance

CVE-2017-11401

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.

EPSS: 0.014 (69.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Belden Tofino_xenon_security_appliance
Belden Tofino_xenon_security_appliance_firmware
N/a — versions n/a

Public proof-of-concept exploits

ARPSyndicate/cve-scores

References

cve@mitre.org (x_refsource_MISC, Vendor Advisory)
cve@mitre.org (Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2017-11401?: CVE-2017-11401 is a critical-severity vulnerability in Belden Tofino Xenon Security Appliance. CVSS score: 9.8/10. Published 2017-11-20.
How severe is CVE-2017-11401?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2017-11401 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.