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CVE-2026-81239 – Remote Code Execution via Unrestricted File Upload – Dell Wyse Management Suite < 2

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Summary

CVE-2026-81239 is an unrestricted file upload vulnerability (CWE-434) in Dell Wyse Management Suite (WMS) that allows an unauthenticated, remote attacker to upload a dangerous file type, potentially leading to remote code execution on the affected system. The issue affects all WMS versions prior to 2605.0.3.683 and carries a CVSS v3.1 base score of 8.6 (High).

Technical details

  • Root cause: The application fails to properly restrict the type of files that can be uploaded, per Dell’s advisory (CWE-434 – Unrestricted Upload of File with Dangerous Type).
  • Trigger conditions: No authentication or user interaction is required to exploit the vulnerability.
  • Attack vector: Network — the vulnerability is remotely exploitable without local access.
  • Impact: Successful exploitation can lead to remote code execution on the WMS server, with a stated impact profile of low confidentiality impact, high integrity impact, and low availability impact.

Affected software

  • Dell Wyse Management Suite (WMS) — all versions prior to 2605.0.3.683
  • Dell Wyse Management Suite Repository — versions prior to 2605.0.3.119 (fixed as part of the same advisory)

Severity

  • CVSS v3.1 Base Score: 8.6 (High)
  • Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L

Mitigation and recommended actions

  • Immediate: Upgrade Dell Wyse Management Suite to version 2605.0.3.683 or later, and the WMS Repository component to version 2605.0.3.119 or later. These fixed versions were released by Dell on August 31, 2026, as part of security advisory DSA-2026-387.
  • If immediate patching is not possible: Restrict network exposure of the WMS management interface to trusted networks only, and limit internet-facing access to WMS servers until the patch can be applied, since the vulnerability is remotely exploitable without authentication.

References

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