CVE intelligence and bounded remediation

CVE-2021-30064 — Belden Tofino Xenon Security Appliance Firmware security vulnerability

Critical CVSS 9.8

On Schneider Electric ConneXium Tofino Firewall TCSEFEA23F3F22 before 03.23, TCSEFEA23F3F20/21, and Belden Tofino Xenon Security Appliance, an SSH login can succeed with hardcoded default credentials (if the device is in the uncommissioned state).

Severity
Critical
CVSS
9.8 (3.1)
Published
2022-04-03
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-798

Affected products

  • belden / tofino_xenon_security_appliance_firmware
  • belden / tofino_argon_fa-tsa-220-tx/mm_firmware
  • belden / tofino_argon_fa-tsa-220-tx/tx_firmware
  • belden / tofino_argon_fa-tsa-220-mm/tx_firmware
  • belden / tofino_argon_fa-tsa-220-mm/mm_firmware
  • belden / tofino_argon_fa-tsa-100-tx/tx_firmware

Showing 6 representative product identities from 13 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Authentication bypass and missing authentication

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Check exposure

  • Map every affected endpoint and protocol path, including alternate ports, legacy routes, recovery flows, service accounts, and machine-to-machine access.
  • Confirm which deployments enable the affected authentication mode and whether the interface is reachable from untrusted networks.
  • Review session, token, credential, and proxy trust configuration without attempting account takeover.

Remediate safely

  • Apply the supported fix and centralize fail-closed authentication before protected request handling.
  • Remove default or embedded credentials, rotate affected secrets and sessions, and bind authentication decisions to the intended audience and channel.
  • Add negative tests for alternate routes, malformed or absent credentials, recovery flows, and proxy-derived identity.

Authoritative sources

Complete CVE record and remediation plan

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