CVE intelligence and bounded remediation

CVE-2020-12501 — Pepperl-Fuchs Es7510-Xt Firmware security vulnerability

Critical CVSS 9.8

Improper Authorization vulnerability of Pepperl+Fuchs P+F Comtrol RocketLinx ES7510-XT, ES8509-XT, ES8510-XT, ES9528-XTv2, ES7506, ES7510, ES7528, ES8508, ES8508F, ES8510, ES8510-XTE, ES9528/ES9528-XT (all versions) use undocumented accounts.

Severity
Critical
CVSS
9.8 (3.1)
Published
2020-10-15
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-798

Affected products

  • pepperl-fuchs / es7510-xt_firmware
  • pepperl-fuchs / es8509-xt_firmware
  • pepperl-fuchs / es8510-xt_firmware
  • pepperl-fuchs / es9528-xtv2_firmware
  • pepperl-fuchs / es7506_firmware
  • pepperl-fuchs / es7510_firmware

Showing 6 representative product identities from 26 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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