CVE-2026-81239 in Wyse Management Suite
Summary
by MITRE • 09/15/2026
Dell Wyse Management Suite, versions prior to 2605.0.3.683, contain an Unrestricted Upload of File with Dangerous Type vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to Remote execution.
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Analysis
by VulDB Data Team • 09/15/2026
The Dell Wyse Management Suite, specifically in versions prior to 2605.0.3.683, is susceptible to a critical security flaw classified as an Unrestricted Upload of File with Dangerous Type. This vulnerability resides within the application's file handling mechanisms, where the system fails to adequately validate or restrict the types of files that users can upload through its interface. In enterprise environments utilizing thin client management solutions like Dell Wyse Management Suite, such functionality is often necessary for administrators to deploy configuration profiles, firmware updates, or custom scripts to managed endpoints. However, when this feature lacks rigorous input validation and type checking, it creates a significant attack vector for malicious actors who have obtained remote access credentials or can bypass authentication mechanisms through other means.
The core technical flaw involves the absence of strict allow-listing for file extensions and content verification during the upload process. An attacker exploiting this vulnerability could craft a request containing a malicious executable script, such as a PHP, ASPX, JSP, or shell script, disguised with an allowed extension or relying on insufficient server-side validation to bypass detection mechanisms. Upon successful upload, these files are often stored in web-accessible directories without proper sanitization of their content. This allows the attacker to subsequently trigger the execution of the uploaded file by accessing its URL through a browser or automated tooling, effectively achieving arbitrary code execution on the underlying operating system hosting the management suite application server.
From an operational impact perspective, this vulnerability poses severe risks to organizational security postures. Successful exploitation leads directly to Remote Code Execution (RCE), granting the attacker full control over the affected server. This level of access allows for comprehensive data exfiltration, including sensitive configuration details, user credentials stored within the management suite database, and potentially network topology information if the compromised host has broader internal connectivity. Furthermore, an attacker could use this foothold to pivot into other parts of the corporate network, install persistent backdoors, or deploy ransomware, thereby disrupting business operations and compromising data integrity across multiple systems managed by the Dell Wyse infrastructure.
This vulnerability aligns with CWE-434, which describes Unrestricted Upload of File with Dangerous Type, a common weakness in web applications that handle user-uploaded content without proper validation. Additionally, from an offensive security perspective as defined by the MITRE ATT&CK framework, this exploit path corresponds to techniques involving Initial Access via Web Applications and Execution through Command or Script Interpretation. The lack of authentication requirements for certain upload endpoints further exacerbates the risk, potentially aligning with CWE-287 regarding Improper Authentication if specific administrative functions are accessible without proper credential verification.
To mitigate this vulnerability, organizations must immediately apply the vendor-recommended patch by upgrading Dell Wyse Management Suite to version 2605.0.3.683 or later. Until patches can be applied in production environments, administrators should implement network-level controls such as Web Application Firewalls (WAF) configured to block requests containing suspicious file extensions like .php, .asp, .jsp, and executable formats in upload parameters. It is also advisable to restrict access to the management suite interface strictly to trusted IP addresses using firewall rules or VPNs with strong multi-factor authentication. Regular security audits of file upload functionalities across all enterprise applications should be conducted to ensure that allow-listing practices are consistently enforced for both file extensions and MIME types, thereby preventing similar exploitation vectors in other systems.