CVE-2025-59216 Overview
CVE-2025-59216 is a race condition vulnerability in the Microsoft Graphics Component affecting Windows 11 24H2 and Windows Server 2025. The flaw stems from concurrent execution using a shared resource with improper synchronization [CWE-362]. An authorized local attacker can exploit the timing window to elevate privileges on the affected system. Microsoft published the advisory on September 18, 2025, and the entry was last updated in the National Vulnerability Database (NVD) on June 17, 2026.
Critical Impact
Successful exploitation grants an authorized attacker elevated privileges on the local system, compromising the confidentiality, integrity, and availability of the host.
Affected Products
- Microsoft Windows 11 24H2
- Microsoft Windows Server 2025
- Microsoft Graphics Component (kernel-mode graphics subsystem)
Discovery Timeline
- 2025-09-18 - CVE-2025-59216 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-59216
Vulnerability Analysis
The vulnerability resides in the Microsoft Graphics Component, a kernel-mode subsystem responsible for rendering and graphics device interface operations. The defect is a race condition, classified under [CWE-362], in which two or more concurrent threads access a shared resource without proper synchronization primitives.
A local attacker with existing low-privilege access on the system can race the vulnerable code path to manipulate shared state between a time-of-check and a time-of-use window. Successful exploitation allows execution in a higher privilege context, typically SYSTEM, giving the attacker full control over the host.
The attack complexity is rated high, reflecting the timing precision required to win the race. Exploitation is not trivial and generally requires repeated attempts to reliably trigger the unsafe state transition.
Root Cause
The root cause is improper synchronization when the Graphics Component accesses a shared resource from multiple execution contexts. Missing or incorrect locking allows an attacker-controlled thread to modify the resource between validation and use, corrupting kernel state or object references used for privilege decisions.
Attack Vector
Exploitation requires local access and low-level authenticated privileges on the target Windows 11 24H2 or Windows Server 2025 system. No user interaction is required. The attacker runs a crafted program that repeatedly invokes the vulnerable graphics API while a secondary thread manipulates the shared object, aiming to trigger the race window. Once the race is won, the attacker gains SYSTEM-level execution.
No public proof-of-concept exploit code has been released for CVE-2025-59216, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog. Refer to the Microsoft CVE-2025-59216 Update Guide for vendor-supplied technical details.
Detection Methods for CVE-2025-59216
Indicators of Compromise
- Unexpected child processes spawned by graphics-related services or dwm.exe running with SYSTEM privileges
- Repeated crashes or bug checks in the graphics kernel driver (win32k.sys, dxgkrnl.sys) preceding suspicious process creation
- New scheduled tasks, services, or local accounts created shortly after a low-privilege user session begins graphics-intensive activity
Detection Strategies
- Monitor Windows Event Log entries for kernel crashes, blue-screen events (Event ID 1001), and Application Error entries referencing graphics subsystem modules
- Correlate token elevation events (Event ID 4672) with the originating process to identify unexpected SYSTEM privilege acquisition from non-administrative users
- Baseline normal parent-child process relationships for graphics components and alert on deviations
Monitoring Recommendations
- Enable kernel-mode auditing and Sysmon process creation logging (Event ID 1) with command-line capture
- Ingest endpoint telemetry into a centralized platform for behavioral correlation of privilege escalation patterns
- Track patch compliance across Windows 11 24H2 and Windows Server 2025 endpoints and flag hosts missing the September 2025 security update
How to Mitigate CVE-2025-59216
Immediate Actions Required
- Apply the Microsoft security update referenced in the MSRC advisory to all Windows 11 24H2 and Windows Server 2025 systems
- Prioritize patching of multi-user hosts, terminal servers, and virtual desktop infrastructure where local users are present
- Audit local user accounts and remove unnecessary interactive logon rights to reduce the pool of potential attackers
Patch Information
Microsoft has released a security update addressing CVE-2025-59216. Deploy the update via Windows Update, Windows Server Update Services (WSUS), or Microsoft Endpoint Configuration Manager. Consult the Microsoft CVE-2025-59216 Update Guide for the specific KB article and build numbers matching your deployed Windows version.
Workarounds
- No official vendor workarounds are documented; patching is the required remediation
- Restrict local logon rights and enforce the principle of least privilege to reduce exposure until patches are applied
- Enable attack surface reduction rules and application control policies to limit execution of untrusted binaries by standard users
# Verify installed Windows updates and current build on affected hosts
Get-HotFix | Sort-Object -Property InstalledOn -Descending | Select-Object -First 20
[System.Environment]::OSVersion.Version
(Get-ItemProperty 'HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion').DisplayVersion
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
