CVE-2025-29981: Dell Wyse Management Suite Info Leak

CVE-2025-29981 Overview

Dell Wyse Management Suite, versions prior to WMS 5.1, contains an Exposure of Sensitive Information Through Data Queries vulnerability (CWE-202). An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to information disclosure. This weakness allows sensitive data to be exposed through data query mechanisms without requiring authentication.

Critical Impact

Unauthenticated remote attackers can extract sensitive information from Dell Wyse Management Suite deployments, potentially exposing confidential organizational data and thin client management configurations.

Affected Products

• Dell Wyse Management Suite versions prior to 5.1

Discovery Timeline

• 2025-04-02 - CVE-2025-29981 published to NVD
• 2025-07-11 - Last updated in NVD database

Technical Details for CVE-2025-29981

Vulnerability Analysis

This vulnerability is classified as CWE-202: Exposure of Sensitive Information Through Data Queries. The flaw exists in how Dell Wyse Management Suite processes and responds to data queries, allowing unauthenticated remote attackers to extract sensitive information from the system.

The vulnerability allows complete compromise of data confidentiality without requiring any user interaction or special privileges. Attackers can remotely access the network-exposed management interface and craft queries that return sensitive information that should be protected. The attack has low complexity, making exploitation straightforward for attackers who can reach the vulnerable service.

Root Cause

The root cause stems from insufficient access controls and improper data filtering in the query processing mechanism of Dell Wyse Management Suite. The application fails to properly authenticate requests before processing data queries, and does not adequately sanitize or restrict the information returned in query responses. This allows unauthenticated users to access data that should only be available to authenticated administrators.

Attack Vector

The attack vector is network-based, requiring only remote access to the Dell Wyse Management Suite web interface. An attacker does not need valid credentials, user interaction, or elevated privileges to exploit this vulnerability. The attacker sends crafted data queries to the management suite's exposed endpoints, which respond with sensitive information due to the lack of proper authentication and authorization checks.

The exploitation path typically involves:

1. Identifying an exposed Dell Wyse Management Suite instance on the network
2. Sending unauthenticated data queries to vulnerable endpoints
3. Receiving responses containing sensitive information that should be protected
4. Leveraging disclosed information for further attacks or data exfiltration

Detection Methods for CVE-2025-29981

Indicators of Compromise

• Unusual or unexpected query patterns to Dell Wyse Management Suite endpoints from unauthenticated sources
• Increased volume of API or query requests to the management console without corresponding authentication events
• Network traffic anomalies showing data extraction patterns from WMS servers
• Log entries indicating access to sensitive data endpoints without valid session tokens

Detection Strategies

• Monitor Dell Wyse Management Suite access logs for unauthenticated query attempts
• Implement network-level monitoring for unusual traffic patterns to WMS servers
• Deploy intrusion detection rules to identify reconnaissance activity targeting WMS endpoints
• Audit authentication logs for missing or bypassed authentication events preceding data access

Monitoring Recommendations

• Enable verbose logging on Dell Wyse Management Suite servers
• Configure alerting for queries accessing sensitive data without proper authentication
• Establish baseline network traffic patterns and alert on deviations
• Implement SIEM correlation rules for WMS-related security events

How to Mitigate CVE-2025-29981

Immediate Actions Required

• Upgrade Dell Wyse Management Suite to version 5.1 or later immediately
• Restrict network access to the Dell Wyse Management Suite to authorized administrators only
• Implement network segmentation to limit exposure of the management interface
• Review access logs for any signs of prior exploitation

Patch Information

Dell has released a security update addressing this vulnerability. Organizations should upgrade to Dell Wyse Management Suite version 5.1 or later. Detailed patch information and download links are available in the Dell Security Advisory DSA-2025-135.

Workarounds

• Place Dell Wyse Management Suite behind a VPN or firewall to restrict external access
• Implement network-level access controls to limit connectivity to trusted IP addresses only
• Use a web application firewall (WAF) to filter and monitor requests to the management interface
• Disable or restrict unnecessary API endpoints until patching is complete

# Example: Restrict access to WMS using firewall rules (iptables)
# Allow only trusted management network
iptables -A INPUT -p tcp --dport 443 -s 10.10.10.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -j DROP

# Verify Dell Wyse Management Suite version
# Check version in WMS Admin Console under System > About