CVE intelligence and bounded remediation

CVE-2025-67039 — An issue was discovered in Lantronix EDS3000PS 3.1.0.0R2

Critical CVSS 9.1

An issue was discovered in Lantronix EDS3000PS 3.1.0.0R2. The authentication on management pages can be bypassed by appending a specific suffix to the URL and by sending an Authorization header that uses "admin" as the username.

Severity
Critical
CVSS
9.1 (3.1)
Published
2026-03-11
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-288

Affected products

  • lantronix / eds3016ps1ns_firmware / 3.1.0.0r2
  • lantronix / eds3008ps1ns_firmware / 3.1.0.0r2

Matched remediation archetype

Authentication bypass and missing authentication

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

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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