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CVE-2026-81236 – Unauthenticated RCE via Unrestricted File Upload – Dell Wyse Management Suite befor

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Summary

CVE-2026-81236 is an unrestricted file upload vulnerability (CWE-434) affecting Dell Wyse Management Suite (WMS) versions prior to 2605.0.3.683. An unauthenticated remote attacker can exploit the flaw to upload arbitrary files to the server, potentially achieving remote code execution. The issue carries a CVSS v3.1 base score of 8.6 (High) and requires no authentication or user interaction to exploit.

Technical details

  • Root cause: Dell Wyse Management Suite fails to properly restrict the type or destination of files that can be uploaded to the application, allowing an attacker to place a malicious file on the server (CWE-434: Unrestricted Upload of File with Dangerous Type).
  • Trigger conditions: An attacker sends a crafted upload request to an exposed WMS instance; no valid credentials or prior session are required.
  • Attack vector: Network-based (AV:N), low attack complexity (AC:L), no privileges required (PR:N), no user interaction required (UI:N).
  • Impact: Low confidentiality impact, high integrity impact, and low availability impact — consistent with an attacker being able to plant a file that can later be leveraged for code execution or unauthorized modification of server-side content.

Affected software

  • Dell Wyse Management Suite (WMS) — all versions prior to 2605.0.3.683

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, which remediates this vulnerability.
  • If immediate patching is not possible:
    • Restrict network access to the WMS management console and upload endpoints to trusted internal networks only; do not expose the administration interface directly to the internet.
    • Place the WMS server behind a firewall or VPN and limit inbound access to authorized administrative hosts.
    • Monitor WMS server logs and file system for unexpected file uploads or newly created files in web-accessible directories.
    • Review Dell’s security advisory for this release for any additional hardening guidance specific to your deployment.

References

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