CVE intelligence and bounded remediation

CVE-2022-24693 — Baicells Nova436Q Firmware security vulnerability

Critical CVSS 9.8

Baicells Nova436Q and Neutrino 430 devices with firmware through QRTB 2.7.8 have hardcoded credentials that are easily discovered, and can be used by remote attackers to authenticate via ssh. (The credentials are stored in the firmware, encrypted by the crypt function.)

Severity
Critical
CVSS
9.8 (3.1)
Published
2022-03-30
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-798

Affected products

  • baicells / nova436q_firmware
  • baicells / neutrino_430_firmware

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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