CVE-2026-82159 in Wyse Management Suite
Summary
by MITRE • 11/03/2026
Dell Wyse Management Suite, versions prior to 2609.0.0.155, contain an Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability. A low privileged attacker with remote access could potentially exploit this vulnerability, leading to Script injection.
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Analysis
by VulDB Data Team • 11/03/2026
The Dell Wyse Management Suite, specifically versions prior to 2609.0.0.155, is susceptible to a critical web application security flaw classified as Improper Neutralization of Input During Web Page Generation, commonly known as Cross-site Scripting or XSS. This vulnerability stems from the software's failure to adequately sanitize user-supplied input before rendering it within dynamic web pages. In modern enterprise environments, management suites like Dell Wyse serve as central control points for thin client infrastructure, making any compromise in their security posture a significant risk vector for broader network intrusion. The flaw allows an attacker with low privileges and remote access capabilities to inject malicious scripts into the application's interface, which are then executed by the browsers of other users who view the affected page.
From a technical perspective, this vulnerability represents a classic instance of stored or reflected cross-site scripting depending on how the input is persisted within the system. When an attacker submits crafted data containing executable JavaScript code through vulnerable fields in the management suite's web interface, the application fails to escape special characters such as angle brackets, quotes, and ampersands that are essential for preventing script execution. Consequently, when this malicious content is retrieved and displayed by a legitimate administrator or user, the browser interprets it not as plain text but as active code. This behavior violates fundamental security principles regarding input validation and output encoding, which dictate that all data entering an application must be treated as untrusted until proven safe through rigorous filtering mechanisms.
The operational impact of this vulnerability is severe due to the privileged nature of typical users interacting with management suites. An attacker can leverage successful script injection to perform a variety of malicious actions on behalf of the victim user. These actions include stealing session cookies, which could lead to session hijacking and unauthorized administrative access; capturing keystrokes to harvest sensitive credentials such as passwords or encryption keys; redirecting the user to phishing sites designed to mimic legitimate Dell management portals; or modifying page content to deface the interface or spread further malware. Because the vulnerability requires only low-privileged remote access, it lowers the barrier for entry significantly, allowing less sophisticated threat actors to exploit a high-value target within an organization's IT infrastructure.
This incident aligns with CWE-79, which defines Improper Neutralization of Input During Web Page Generation as a category where web applications do not properly neutralize user input before including it in output. Furthermore, the exploitation technique maps directly to MITRE ATT&CK techniques such as T1059 Command and Scripting Interpreter for executing arbitrary code within the victim's browser context, and potentially T1078 Valid Accounts if the attacker uses stolen credentials obtained through cookie theft to escalate privileges or move laterally across the network. The ability to execute scripts in the security context of the management suite effectively bypasses same-origin policies that normally protect web applications from accessing data on other domains, thereby compromising confidentiality and integrity.
To mitigate this risk, organizations must immediately apply the vendor-recommended patch by upgrading Dell Wyse Management Suite to version 2609.0.0.155 or later. This update includes specific code changes designed to properly encode output and validate input, ensuring that any special characters are rendered safely as text rather than executable commands. In addition to applying patches, administrators should implement Web Application Firewalls configured with rulesets capable of detecting and blocking common XSS payloads in HTTP requests. It is also advisable to enforce Content Security Policy headers on the management suite's web interface to restrict the sources from which scripts can be loaded, thereby reducing the impact even if a vulnerability persists. Regular security audits and penetration testing focused on input validation weaknesses are recommended to identify similar flaws across other internet-facing applications within the enterprise environment.