CVE-2025-55698

DirectX Graphics Kernel Denial of Service Vulnerability

CVE-2025-55698 is fixed in 6 products on 1 platform, first by KB5066835, released October 14, 2025. It is not reported as exploited. Patch Radar priority: High.

High

CVSS

7.7

Important

Exploitation

None reported

Exploitation Less Likely

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0122

68th percentile

<p>Null pointer dereference in Windows DirectX allows an authorized attacker to deny service over a network.</p>

Where it's fixed

Product	Fix	Released
Microsoft
Windows 11 Version 24H2 for ARM64-based Systems	KB5066835	Oct 14, 2025
Windows 11 Version 24H2 for x64-based Systems	KB5066835	Oct 14, 2025
Windows 11 Version 25H2 for ARM64-based Systems	KB5066835	Oct 14, 2025
Windows 11 Version 25H2 for x64-based Systems	KB5066835	Oct 14, 2025
Windows Server 2025	KB5066835	Oct 14, 2025
Windows Server 2025 (Server Core installation)	KB5066835	Oct 14, 2025

Details

Published
October 14, 2025
Weakness
NULL Pointer Dereference
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-55698

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