CVE intelligence and bounded remediation

CVE-2021-33528 — Weidmueller Ie-Wl-Bl-Ap-Cl-Eu Firmware security vulnerability

High CVSS 9

In Weidmueller Industrial WLAN devices in multiple versions an exploitable privilege escalation vulnerability exists in the iw_console functionality. A specially crafted menu selection string can cause an escape from the restricted console, resulting in system access as the root user. An attacker can send commands while authenticated as a low privilege user to trigger this vulnerability.

Severity
High
CVSS
9 (2.0)
Published
2021-06-25
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-710

Affected products

  • weidmueller / ie-wl-bl-ap-cl-eu_firmware
  • weidmueller / ie-wlt-bl-ap-cl-eu_firmware
  • weidmueller / ie-wl-bl-ap-cl-us_firmware
  • weidmueller / ie-wlt-bl-ap-cl-us_firmware
  • weidmueller / ie-wl-vl-ap-br-cl-eu_firmware
  • weidmueller / ie-wlt-vl-ap-br-cl-eu_firmware

Showing 6 representative product identities from 16 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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