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Wyse Management Suite CVE-2026-82159

| EUVDEUVD-2026-116373 HIGH
Cross-site Scripting (XSS) (CWE-79)
2026-11-03 dell GHSA-7m73-p97p-f9qj
8.8
CVSS 3.1 · Vendor: dell
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Authenticate as low-privileged WMS user
  2. Exploit
    Inject script payload into web page field
  3. Execution
    Payload rendered in victim/admin browser
  4. Impact
    Hijack session or act as victim

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Output encoding, context-aware escaping
MITRE ATT&CK

2 techniques across 2 tactics: Initial Access, Execution

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Requires a valid low-privileged authenticated account on the Dell Wyse Management Suite web interface with remote network access to it (CVSS PR:L). The flaw is script injection ('Cross-site Scripting') in web page generation, but the available sources do not name the specific feature, field, or page that is the injection point - the trigger is not described in the available sources. Realistic exploitation of XSS of this type typically also depends on a second user (often an administrator) rendering the injected content; the vendor marks UI:N, but this is unverified against mechanism. Limiting factors: attacker must first obtain a low-privileged WMS account, and exposure is confined to deployments running the WMS console at a version prior to 2609.0.0.155.

Impact

Signals are moderately consistent but not fully corroborated. The vendor CVSS vector (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H = 8.8 High) describes a network-reachable, low-complexity flaw needing only low privileges and no user interaction. EPSS is not provided, the CVE is not in CISA KEV, and no public exploit is referenced, so exploitation status is 'no public exploit identified at time of analysis.' The vuln.today decision label is 'this_week,' indicating prioritized-but-not-emergency remediation, which fits a high-CVSS issue lacking confirmed exploitation. One signal is internally inconsistent and should be flagged: a CWE-79 cross-site scripting bug carries a full C:H/I:H/A:H impact triad with UI:N and Scope:Unchanged - atypical for XSS, which usually requires a victim to render the payload (UI:R) and causes a scope change into the victim's browser with limited availability impact. Treat the 8.8 as the vendor's rating rather than independently validated mechanism; verify the injection point and real impact with Dell. Net: a real, worth-patching authenticated web vulnerability in a management console, but closer to a targeted insider/foothold-escalation issue than a mass-exploited internet threat given the required low-privileged account and absence of EPSS/KEV/POC evidence.

Exploit ScenarioDerived

A low-privileged authenticated user of the Dell Wyse Management Suite web console injects malicious script into a field that is later rendered in another user's browser (typically a higher-privileged administrator), executing attacker-controlled JavaScript in that session. This could be used to steal session tokens or perform actions as the victim. No public exploit code is referenced, and the specific injection point is not described in the available sources.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available

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AnalysisAIv1 – Nov 03, 2026

Dell Wyse Management Suite deployments running versions prior to 2609.0.0.155 contain a cross-site scripting (CWE-79) flaw in web page generation that lets a remote, low-privileged authenticated user inject script content through the WMS web console. An attacker must first hold a valid low-privileged account on the console; the available sources do not identify the specific page, field, or request that carries the injection, so the precise trigger is not described. The vendor scores the issue at 8.8, while our independent assessment lowers it to reflect a required user interaction and scope change (AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N); no public exploit code or confirmed active exploitation was identified at time of analysis, and the vendor advisory (DSA-2026-405) is the primary reference.

RemediationAI

Vendor-released patch: upgrade Dell Wyse Management Suite to 2609.0.0.155 or later - Dell's DSA-2026-405 advisory at https://www.dell.com/support/kbdoc/en-us/000506515/dsa-2026-405-security-update-for-dell-wyse-management-suite-wms-for-multiple-vulnerabilities lists the fixed builds for the affected branches and should be checked to match the exact release train in use. Because the flaw requires only a low-privileged authenticated account, reduce the window before patching by auditing and trimming WMS console accounts that do not need access, and restricting network reachability of the console to trusted management networks so unprivileged users cannot reach it from untrusted segments; both reduce the attacker population able to reach the injection point but do not remove the vulnerability. The supplied sources do not document a vendor workaround, so patching to 2609.0.0.155 remains the only complete fix; note that restricting console access can interfere with legitimate remote administration workflows and should be scoped to administrative subnets.

Affected VersionsENISA

Wyse Management Suite 0 <2609.0.0.155

Affected Packages

euvd wyse_management_suite fix: 2609.0.0.155

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The issue is classified as CWE-79, Improper Neutralization of Input During Web Page Generation, in the Dell Wyse Management Suite web application - a console used to manage Wyse thin clients, configurations, and device policy. The root cause class is failure to escape or encode attacker-influenced data that is subsequently emitted into an HTML page, so browser-side script executes in the security context of the WMS console origin. The affected product scope is captured by the CPE cpe:2.3:a:dell:wyse_management_suite:*:*:*:*:*:*:*:*, bounded by the vendor's fix at 2609.0.0.155. The vendor's CVSS vector (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) treats the flaw as fully self-contained with no user interaction, whereas the independent assessment models it as UI:R with scope change and limited confidentiality/integrity impact (S:C/C:L/I:L/A:N), which is more consistent with typical script-injection flaws where a second user must render the injected content. Which of these models holds depends on the injection point, and the available sources do not name the feature, parameter, or page involved, so the trigger is not described in the available evidence. Nothing in the supplied data indicates a stored versus reflected variant, or whether an administrator session specifically is targeted.

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Severity by source

Vendor (dell) PRIMARY 8.8 HIGH
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
vuln.today AI 5.4 MEDIUM

Stored XSS by a low-privileged authenticated user (PR:L) reaching another user's browser gives S:C with UI:R; impact is limited session-level C:L/I:L and no availability effect, unlike the vendor's C:H/I:H/A:H.

3.1 AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
4.0 AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

Primary rating from Vendor (dell).

CVSS VectorVendor: dell

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Patch available
Nov 03, 2026 - 22:04 EUVD
CVE Published
Nov 03, 2026 - 20:50 cve.org
HIGH 8.8

DescriptionCVE.org

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.

Executive ViewAI

Why It Matters

Dell Wyse Management Suite versions prior to 2609.0.0.155 contain a cross-site scripting flaw that allows a low-privileged authenticated user to inject script into the web console. This could enable session hijacking or data theft for console users, but requires user interaction and a valid account. Leadership should prioritize patching or mitigation because WMS is critical for managing thin client endpoints, and a compromise could disrupt device management operations.

Business Impact: Medium
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations include restricting network access to the WMS console, enforcing least privilege and MFA for console accounts, deploying a web application firewall to filter malicious script input, and monitoring for anomalous user behavior.

Threat Intelligence Overview

Prevalence
Medium
enterprise thin-client fleet management, deployed where Dell Wyse endpoints are used
Data Quality
2 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS N/A
Patch available Yes
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact
Medium

Priority Score

44
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +44
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Cross-Site Scripting occurs when an application accepts untrusted data and sends it to a web browser without proper validation or encoding.

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