CVE-2025-53722: Windows 10 1507 DoS Vulnerability

CVE-2025-53722 Overview

CVE-2025-53722 is a high-severity uncontrolled resource consumption vulnerability affecting Windows Remote Desktop Services (RDS). This denial-of-service vulnerability allows an unauthorized attacker to exhaust system resources over a network connection, potentially rendering Remote Desktop Services unavailable to legitimate users. The vulnerability impacts a wide range of Windows client and server operating systems, making it a significant concern for enterprise environments that rely heavily on RDS for remote access and management.

Critical Impact

Unauthenticated remote attackers can cause denial of service conditions on Windows Remote Desktop Services, disrupting remote access capabilities across enterprise environments without requiring any user interaction.

Affected Products

• Microsoft Windows 10 (versions 1507, 1607, 1809, 21H2, 22H2)
• Microsoft Windows 11 (versions 22H2, 23H2, 24H2)
• Microsoft Windows Server 2008 R2 SP1
• Microsoft Windows Server 2012 and 2012 R2
• Microsoft Windows Server 2016
• Microsoft Windows Server 2019
• Microsoft Windows Server 2022 and 2022 23H2
• Microsoft Windows Server 2025

Discovery Timeline

• August 12, 2025 - CVE-2025-53722 published to NVD
• August 18, 2025 - Last updated in NVD database

Technical Details for CVE-2025-53722

Vulnerability Analysis

This vulnerability is classified under CWE-400 (Uncontrolled Resource Consumption), indicating that Windows Remote Desktop Services fails to properly manage and limit resource allocation when processing network requests. The flaw allows remote attackers to trigger excessive resource consumption without authentication, leading to service degradation or complete unavailability.

The attack can be executed remotely over the network with low complexity, requiring no privileges or user interaction. While the vulnerability does not compromise confidentiality or integrity, it can cause significant availability impact by exhausting system resources such as memory, CPU cycles, or network connections allocated to the RDS service.

Root Cause

The root cause stems from insufficient resource management within the Windows Remote Desktop Services component. When processing certain network requests, the service fails to implement proper bounds checking or rate limiting, allowing attackers to force the allocation of excessive resources. This design flaw enables resource exhaustion attacks that can overwhelm the target system's capacity to handle legitimate RDS connections.

Attack Vector

The attack is network-based, requiring the attacker to have network access to the target system's Remote Desktop Services port (typically TCP 3389). An attacker can craft and send specially designed network packets or connection requests that exploit the resource management flaw. Since no authentication is required, any network-accessible RDS endpoint becomes a potential target.

The exploitation involves sending a high volume of malformed or resource-intensive requests to the RDS service, causing it to allocate resources without proper cleanup or limitation. This results in service degradation for legitimate users attempting to establish remote desktop connections.

Detection Methods for CVE-2025-53722

Indicators of Compromise

• Unusual spikes in network traffic directed at TCP port 3389 from single or multiple source IP addresses
• High memory or CPU utilization by the Remote Desktop Services process (svchost.exe hosting TermService or rdpclip.exe)
• Increased failed connection attempts or timeouts for Remote Desktop sessions
• Event log entries indicating RDS service instability or resource exhaustion warnings

Detection Strategies

• Monitor network traffic patterns for anomalous connection rates to RDP ports using network intrusion detection systems
• Implement baseline monitoring for RDS process resource consumption and alert on deviations exceeding normal thresholds
• Deploy SentinelOne endpoint protection to detect and respond to resource exhaustion behaviors targeting system services
• Configure Windows Event Log monitoring for Terminal Services-related warnings and errors

Monitoring Recommendations

• Enable detailed logging for Remote Desktop Services in Windows Event Viewer under Applications and Services Logs > Microsoft > Windows > TerminalServices
• Implement real-time network flow analysis to identify potential DoS traffic patterns targeting RDP endpoints
• Configure automated alerts for sustained high resource utilization on systems running Remote Desktop Services

How to Mitigate CVE-2025-53722

Immediate Actions Required

• Apply the latest Microsoft security updates addressing CVE-2025-53722 as soon as possible
• Restrict network access to Remote Desktop Services using firewall rules or Network Level Authentication (NLA)
• Implement rate limiting at the network perimeter for connections to TCP port 3389
• Consider deploying Remote Desktop Gateway to add an additional authentication layer before RDS access
• Enable SentinelOne's runtime protection to monitor and protect against service abuse patterns

Patch Information

Microsoft has released security updates to address this vulnerability. Refer to the Microsoft Security Response Center advisory for specific patch versions and download links for affected operating systems. Apply the appropriate cumulative update or security patch for your Windows version through Windows Update, WSUS, or manual installation.

Workarounds

• Disable Remote Desktop Services on systems where it is not required to eliminate the attack surface
• Implement network segmentation to limit exposure of RDS endpoints to trusted networks only
• Use VPN or Zero Trust Network Access (ZTNA) solutions to restrict RDP access to authenticated and authorized users
• Configure Windows Firewall to allow RDP connections only from specific trusted IP addresses or subnets

# Example: Restrict RDP access to specific IP ranges using Windows Firewall
netsh advfirewall firewall add rule name="RDP Restricted Access" dir=in action=allow protocol=tcp localport=3389 remoteip=10.0.0.0/8,192.168.0.0/16
netsh advfirewall firewall add rule name="RDP Block All Others" dir=in action=block protocol=tcp localport=3389