CVE intelligence and bounded remediation

CVE-2020-7544 — Schneider-Electric Operator Terminal Expert Runtime security vulnerability

High CVSS 7.8

A CWE-269 Improper Privilege Management vulnerability exists in EcoStruxureª Operator Terminal Expert runtime (Vijeo XD) that could cause privilege escalation on the workstation when interacting directly with a driver installed by the runtime software of EcoStruxureª Operator Terminal Expert.

Severity
High
CVSS
7.8 (3.1)
Published
2020-11-19
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-269

Affected products

  • schneider-electric / operator_terminal_expert_runtime
  • schneider-electric / operator_terminal_expert_runtime / 3.1

Showing 2 representative product identities from 3 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Privilege escalation and unsafe privilege management

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Check exposure

  • Map service accounts, operating-system identities, roles, capabilities, impersonation, set-user transitions, and administrative helper paths.
  • Determine whether untrusted users or lower-privilege processes can reach the affected transition or modify inputs it trusts.
  • Review file, socket, registry, device, job, container, and cloud-role permissions used before and after privilege changes.

Remediate safely

  • Apply the supported fix and redesign privileged operations as a minimal, authenticated, allowlisted interface.
  • Drop privileges before processing untrusted input, verify the drop succeeds, and remove unnecessary roles, capabilities, and write permissions.
  • Validate ownership and permissions at time of use and add explicit lower-to-higher privilege boundary tests.

Authoritative sources

Complete CVE record and remediation plan

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