CVE intelligence and bounded remediation

CVE-2022-47848 — Bezeq Vtech Nb403-Il Firmware security vulnerability

High CVSS 7.5

An issue was discovered in Bezeq Vtech NB403-IL version BZ_2.02.07.09.13.01 and Vtech IAD604-IL versions BZ_2.02.07.09.13.01, BZ_2.02.07.09.13T, and BZ_2.02.07.09.09T, allows remote attackers to gain sensitive information via rootDesc.xml page of the UPnP service.

Severity
High
CVSS
7.5 (3.1)
Published
2023-09-15
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-287

Affected products

  • bezeq / vtech_nb403-il_firmware / bz_2.02.07.09.13.01
  • bezeq / vtech_iad604-il_firmware / bz_2.02.07.09.09t
  • bezeq / vtech_iad604-il_firmware / bz_2.02.07.09.13.01
  • bezeq / vtech_iad604-il_firmware / bz_2.02.07.09.13t

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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