CVE-2025-47984: Windows 10 Information Disclosure Flaw

CVE-2025-47984 Overview

CVE-2025-47984 is a protection mechanism failure vulnerability in the Windows Graphics Device Interface (GDI) component that enables unauthorized network-based information disclosure. The Windows GDI subsystem, responsible for representing graphical objects and transmitting them to output devices, contains a security flaw that allows remote attackers to access sensitive information without requiring any authentication or user interaction.

This vulnerability affects a broad range of Microsoft Windows operating systems, including both client and server editions spanning from Windows Server 2008 through the latest Windows Server 2025, as well as Windows 10 and Windows 11 client versions. The network-accessible attack vector combined with the lack of privilege requirements makes this vulnerability particularly concerning for enterprise environments.

Critical Impact

Remote attackers can exploit this GDI protection mechanism failure to disclose sensitive information from affected Windows systems without authentication, potentially exposing confidential data across the network.

Affected Products

• Microsoft Windows 10 (versions 1507, 1607, 1809, 21H2, 22H2)
• Microsoft Windows 11 (versions 22H2, 23H2, 24H2)
• Microsoft Windows Server 2008 SP2, Windows Server 2008 R2 SP1
• Microsoft Windows Server 2012, Windows Server 2012 R2
• Microsoft Windows Server 2016
• Microsoft Windows Server 2019
• Microsoft Windows Server 2022, Windows Server 2022 23H2
• Microsoft Windows Server 2025

Discovery Timeline

• July 8, 2025 - CVE-2025-47984 published to NVD
• July 14, 2025 - Last updated in NVD database

Technical Details for CVE-2025-47984

Vulnerability Analysis

The vulnerability resides in the Windows GDI (Graphics Device Interface) component, a core Windows subsystem responsible for handling graphical output operations. The flaw is classified under CWE-693 (Protection Mechanism Failure), indicating that the intended security mechanisms designed to protect sensitive data within the GDI subsystem are not functioning as expected.

GDI serves as the interface between applications and graphics drivers, managing drawing operations, font rendering, and image manipulation. When the protection mechanisms within this component fail, an attacker can leverage network-based requests to extract information that should otherwise be protected by the operating system's security boundaries.

The attack can be executed remotely over a network without requiring authentication or user interaction, making it particularly dangerous in environments where Windows systems are exposed to untrusted networks. While this vulnerability specifically enables information disclosure rather than code execution, the exposed data could facilitate further attacks or compromise sensitive organizational information.

Root Cause

The root cause of CVE-2025-47984 is a protection mechanism failure within the Windows GDI component. This type of vulnerability occurs when security controls designed to prevent unauthorized access to data fail to operate correctly, allowing sensitive information to leak through unintended channels. The GDI subsystem's security boundaries do not adequately protect against network-based information extraction attempts, enabling unauthorized disclosure of system information.

Attack Vector

The attack exploits the network-accessible nature of the vulnerability, requiring no privileges or user interaction. An attacker can remotely craft requests that bypass the GDI component's protection mechanisms, causing the system to disclose sensitive information. The attack does not require local access to the target system, making it exploitable from anywhere with network connectivity to the vulnerable system.

The vulnerability primarily impacts confidentiality without affecting system integrity or availability. Attackers can exploit this flaw to gather intelligence about the target system or extract sensitive data that may be processed through the GDI subsystem.

Detection Methods for CVE-2025-47984

Indicators of Compromise

• Unusual network traffic patterns targeting GDI-related services or ports on Windows systems
• Unexpected outbound data transfers containing potentially sensitive information from Windows graphics components
• Anomalous system behavior related to graphics rendering or GDI operations
• Evidence of unauthorized remote access attempts targeting Windows GDI functionality

Detection Strategies

• Monitor network traffic for suspicious connections targeting Windows systems that may indicate exploitation attempts
• Implement endpoint detection and response (EDR) solutions to identify anomalous GDI component behavior
• Deploy network intrusion detection systems (NIDS) with signatures for known exploitation patterns
• Enable Windows Security Event logging and monitor for suspicious GDI-related activities

Monitoring Recommendations

• Enable enhanced Windows auditing for security-relevant events on affected systems
• Configure SIEM solutions to correlate network-based attacks with Windows security events
• Monitor for unusual process behavior involving GDI-related system components such as gdi32.dll
• Implement network segmentation monitoring to detect lateral movement following potential information disclosure

How to Mitigate CVE-2025-47984

Immediate Actions Required

• Apply the latest Microsoft security updates addressing CVE-2025-47984 immediately on all affected systems
• Prioritize patching internet-facing and network-exposed Windows systems
• Implement network segmentation to limit exposure of vulnerable systems to untrusted networks
• Review firewall rules to restrict unnecessary network access to affected Windows systems

Patch Information

Microsoft has released security updates to address this vulnerability. Administrators should consult the Microsoft Security Update Guide for CVE-2025-47984 for detailed patch information specific to their Windows versions. The security update addresses the protection mechanism failure in the Windows GDI component and should be deployed through standard Windows Update channels or WSUS for enterprise environments.

Workarounds

• Restrict network access to affected Windows systems using firewalls and network access control lists
• Implement network segmentation to isolate critical systems from potentially malicious network traffic
• Deploy application-layer firewalls to inspect and filter traffic to Windows systems
• Consider temporarily disabling non-essential network services on highly sensitive systems until patches can be applied

# Example: Configure Windows Firewall to restrict inbound connections
# Run in elevated PowerShell to limit network exposure

# Enable Windows Firewall for all profiles
Set-NetFirewallProfile -Profile Domain,Public,Private -Enabled True

# Block inbound connections by default (adjust rules as needed for your environment)
Set-NetFirewallProfile -Profile Domain,Public,Private -DefaultInboundAction Block

# Allow only essential management traffic from trusted subnets
New-NetFirewallRule -DisplayName "Allow RDP from Trusted Network" -Direction Inbound -Protocol TCP -LocalPort 3389 -RemoteAddress 10.0.0.0/8 -Action Allow