CVE intelligence and bounded remediation

CVE-2024-21824 — Improper authentication vulnerability in exists in multiple printers and scanners which implement Web Based Management provided by...

Medium CVSS 5.3

Improper authentication vulnerability in exists in multiple printers and scanners which implement Web Based Management provided by BROTHER INDUSTRIES, LTD. If this vulnerability is exploited, a network-adjacent user who can access the product may impersonate an administrative user. As for the details of affected product names, model numbers, and versions, refer to the information provided by the respective vendors listed under [References].

Severity
Medium
CVSS
5.3 (3.1)
Published
2024-03-18
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-306

Affected products

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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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