CVE-2025-59195 Overview
CVE-2025-59195 is a race condition vulnerability in the Microsoft Graphics Component. The flaw involves concurrent execution using a shared resource with improper synchronization [CWE-362]. An authorized local attacker can exploit the timing window to cause a denial-of-service condition on the affected system.
The vulnerability affects supported versions of Windows 10, Windows 11, and Windows Server. Exploitation requires local access and low privileges, but the attack complexity is high because the attacker must reliably win the race window between concurrent operations on the shared graphics resource.
Critical Impact
A local authenticated attacker can trigger a denial-of-service condition affecting the Microsoft Graphics Component across Windows client and server platforms.
Affected Products
- Microsoft Windows 10 (1809, 21H2, 22H2)
- Microsoft Windows 11 (22H2, 23H2, 24H2, 25H2)
- Microsoft Windows Server 2019, 2022, 2022 23H2, and 2025
Discovery Timeline
- 2025-10-14 - CVE-2025-59195 published to the National Vulnerability Database
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-59195
Vulnerability Analysis
The vulnerability resides in the Microsoft Graphics Component, a subsystem responsible for rendering and graphics-related kernel operations across Windows. The defect is classified as a race condition [CWE-362], where two or more concurrent execution paths access a shared resource without proper synchronization primitives.
When the timing window between check and use is hit successfully, the graphics subsystem enters an inconsistent state. This inconsistency results in a denial-of-service condition impacting availability, confidentiality, and integrity of the component. The Microsoft Security Response Center advisory tracks this issue under the October 2025 patch cycle.
Root Cause
The root cause is improper synchronization on a shared resource within the graphics stack. When multiple threads or processes operate concurrently on the same object, the absence of adequate locking allows one execution path to observe or modify state that another path is mid-way through updating. This produces an atomicity violation that corrupts internal graphics component state.
Attack Vector
Exploitation requires local access to the target system and authenticated low-privileged execution. The attacker crafts concurrent operations designed to interleave with graphics component activity, repeatedly triggering the race until the window is won. No user interaction is required. Because attack complexity is high, reliable exploitation depends on system load and timing precision. Successful exploitation crashes or destabilizes the graphics subsystem, denying service to legitimate users.
Microsoft has not published exploitation details. See the Microsoft CVE-2025-59195 Update for technical details.
Detection Methods for CVE-2025-59195
Indicators of Compromise
- Unexpected crashes of the graphics subsystem or dwm.exe on affected Windows hosts
- Repeated WerFault.exe entries in the Windows Event Log correlated with graphics component modules
- Sudden loss of display responsiveness or forced session termination without a legitimate trigger
Detection Strategies
- Monitor Windows Error Reporting for repeated faults referencing graphics component binaries such as win32k.sys or dxgkrnl.sys
- Track low-privileged processes that spawn high volumes of concurrent graphics-related API calls
- Correlate DoS symptoms with recent local logons from non-administrative accounts
Monitoring Recommendations
- Ingest Windows Event Logs and kernel crash telemetry into a centralized SIEM for correlation across endpoints
- Alert on repeated system stability failures from the same user or process within short time windows
- Baseline normal graphics subsystem crash rates and flag deviations that suggest active exploitation attempts
How to Mitigate CVE-2025-59195
Immediate Actions Required
- Apply the October 2025 security updates from Microsoft to all affected Windows client and server versions
- Prioritize patching on multi-user systems such as Remote Desktop Session Hosts where local access is broadly available
- Restrict interactive logon rights to trusted accounts on servers and shared workstations
Patch Information
Microsoft has released security updates addressing CVE-2025-59195. Refer to the Microsoft Security Response Center advisory for the specific KB articles corresponding to each affected Windows build. Administrators should deploy updates via Windows Update, WSUS, or Microsoft Update Catalog according to their standard patch management process.
Workarounds
- No official workaround has been published by Microsoft; patching is the required remediation
- Reduce exposure by limiting local and Remote Desktop access to trusted, authenticated users only
- Enforce least privilege and remove unnecessary local accounts from systems pending patch deployment
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
