CVE intelligence and bounded remediation

CVE-2021-30066 — Belden Tofino Xenon Security Appliance Firmware security vulnerability

High CVSS 7.2

On Schneider Electric ConneXium Tofino Firewall TCSEFEA23F3F22 before 03.23, TCSEFEA23F3F20/21, and Belden Tofino Xenon Security Appliance, an arbitrary firmware image can be loaded because firmware signature verification (for a USB stick) can be bypassed. NOTE: this issue exists because of an incomplete fix of CVE-2017-11400.

Severity
High
CVSS
7.2 (2.0)
Published
2022-04-03
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-347

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

Cryptography, certificate, signature, and channel validation

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Inventory affected algorithms, key uses, trust stores, certificate validation settings, random sources, and plaintext channels across clients and services.
  • Determine which secrets, identities, signatures, or data protections depend on the affected primitive or validation path.
  • Check debug, compatibility, fallback, and hostname or audience override settings in build and runtime configuration.

Remediate safely

  • Use a maintained platform cryptographic API with approved algorithms, modes, parameters, randomness, and full peer identity validation.
  • Remove insecure fallback and validation bypasses; separate keys by purpose and load them from managed secret storage.
  • Plan rotation or reissuance for affected keys, certificates, tokens, hashes, or ciphertext and document compatibility sequencing.

Authoritative sources

Complete CVE record and remediation plan

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