CVE intelligence and bounded remediation

CVE-2019-6814 — Schneider-Electric Net5501 Firmware security vulnerability

Critical CVSS 9.8

A CWE-287: Improper Authentication vulnerability exists in the NET55XX Encoder with firmware prior to version 2.1.9.7 which could cause impact to confidentiality, integrity, and availability when a remote attacker crafts a malicious request to the encoder webUI.

Severity
Critical
CVSS
9.8 (3.1)
Published
2019-05-22
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-287

Affected products

  • schneider-electric / net5501_firmware
  • schneider-electric / net5501-i_firmware
  • schneider-electric / net5501-xt_firmware
  • schneider-electric / net5504_firmware
  • schneider-electric / net5500_firmware
  • schneider-electric / net5516_firmware

Showing 6 representative product identities from 7 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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