CVE intelligence and bounded remediation

CVE-2019-9201 — Phoenixcontact Ilc 131 Eth Firmware security vulnerability

Critical CVSS 9.8

Multiple Phoenix Contact devices allow remote attackers to establish TCP sessions to port 1962 and obtain sensitive information or make changes, as demonstrated by using the Create Backup feature to traverse all directories.

Severity
Critical
CVSS
9.8 (3.1)
Published
2019-02-26
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-306

Affected products

  • phoenixcontact / ilc_131_eth_firmware
  • phoenixcontact / ilc_131_eth/xc_firmware
  • phoenixcontact / ilc_151_eth_firmware
  • phoenixcontact / ilc_151_eth/xc_firmware
  • phoenixcontact / ilc_171_eth_2tx_firmware
  • phoenixcontact / ilc_191_eth_2tx_firmware

Showing 6 representative product identities from 8 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

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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