CVE-2025-53807 Overview
CVE-2025-53807 is a race condition vulnerability in the Microsoft Graphics Component that allows an authorized local attacker to elevate privileges on affected Windows systems. The flaw stems from concurrent execution using a shared resource with improper synchronization [CWE-362]. Successful exploitation grants an attacker higher privileges, resulting in high impact to confidentiality, integrity, and availability. Microsoft has published an advisory and released updates addressing the issue across supported Windows client and server platforms.
Critical Impact
An authenticated local attacker who wins the race window can elevate privileges on affected Windows systems, gaining control over confidentiality, integrity, and availability of the host.
Affected Products
- Microsoft Windows 10 (1809, 21H2, 22H2)
- Microsoft Windows 11 (22H2, 23H2, 24H2)
- Microsoft Windows Server 2019, 2022, 2022 23H2, and 2025
Discovery Timeline
- 2025-09-09 - CVE-2025-53807 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-53807
Vulnerability Analysis
The vulnerability resides in the Microsoft Graphics Component, a shared subsystem used by the Windows kernel and user-mode graphics stack for rendering and device object management. The component fails to synchronize access to a shared resource across concurrent execution paths. An authorized local attacker can trigger the race window by issuing crafted graphics-related operations from multiple threads. Winning the race lets the attacker manipulate the shared object between validation and use, corrupting kernel state or object references. This grants elevated execution context, typically SYSTEM, on the compromised host.
Root Cause
The root cause is improper synchronization on a shared resource within the Microsoft Graphics Component [CWE-362]. Two or more concurrent threads access the same object without adequate locking, creating a Time-of-Check to Time-of-Use (TOCTOU) window. An attacker can substitute or alter the object after validation but before consumption, breaking assumptions the graphics code makes about object integrity.
Attack Vector
Exploitation requires local access and valid low-privileged credentials. The attacker executes code that repeatedly races graphics operations to hit the narrow synchronization window. High attack complexity reflects the timing precision needed. No user interaction is required. Because the vulnerable code executes within a privileged graphics path, successful exploitation elevates the attacker to a higher privilege level on the local system.
No public proof-of-concept exploit is available at the time of writing, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog.
Detection Methods for CVE-2025-53807
Indicators of Compromise
- Unexpected token elevation or process integrity level changes originating from user-mode graphics API callers.
- Repeated, high-frequency graphics-related system calls from a single low-privileged process indicative of race-window brute forcing.
- Crash dumps referencing the Microsoft Graphics Component (win32k, dxgkrnl, or related modules) following anomalous user activity.
Detection Strategies
- Baseline normal graphics API call patterns per process and alert on statistically abnormal call volume from non-graphical applications.
- Monitor for child processes spawned with SYSTEM privileges from parents running under standard user tokens.
- Correlate kernel bug checks or graphics driver faults with recent local logon activity to identify failed exploitation attempts.
Monitoring Recommendations
- Ingest Windows Security, Sysmon, and kernel event logs into a centralized analytics pipeline for cross-source correlation.
- Track process integrity level transitions and privilege assignment events (Event IDs 4672, 4673, 4674).
- Alert on unsigned or unusual binaries interacting with graphics device objects from interactive sessions.
How to Mitigate CVE-2025-53807
Immediate Actions Required
- Apply the Microsoft security update for CVE-2025-53807 to all affected Windows 10, Windows 11, and Windows Server systems.
- Prioritize patching multi-user systems, RDP hosts, VDI infrastructure, and terminal servers where local low-privileged users have shell access.
- Audit local account inventories and remove unnecessary interactive logon rights on servers.
Patch Information
Microsoft has released updates addressing this vulnerability. Refer to the Microsoft CVE-2025-53807 Advisory for the specific KB articles and cumulative updates applicable to each Windows build. Install the appropriate cumulative update via Windows Update, WSUS, or your enterprise patch management platform.
Workarounds
- No official workaround is published by Microsoft; patching is the recommended remediation path.
- Restrict local and interactive logon rights to trusted administrative users until patches are deployed.
- Enforce application control policies (Windows Defender Application Control, AppLocker) to block execution of unauthorized binaries capable of triggering the race condition.
# Verify installed updates and patch status on Windows hosts
Get-HotFix | Sort-Object -Property InstalledOn -Descending | Select-Object -First 20
# Enumerate accounts with interactive logon rights to reduce local attack surface
secedit /export /cfg C:\Temp\secpol.cfg
Select-String -Path C:\Temp\secpol.cfg -Pattern "SeInteractiveLogonRight"
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
