CVE intelligence and bounded remediation

CVE-2023-1752 — Getnexx Nxal-100 Firmware security vulnerability

High CVSS 8.1

The listed versions of Nexx Smart Home devices could allow any user to register an already registered alarm or associated device with only the device’s MAC address.

Severity
High
CVSS
8.1 (3.1)
Published
2023-04-04
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-287

Affected products

  • getnexx / nxal-100_firmware
  • getnexx / nxg-100b_firmware
  • getnexx / nxpg-100w_firmware
  • getnexx / nxg-200_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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