Status: UPDATED | Advisory ID: CVE-2026-56198
| CVE | CVE-2026-56198 |
| CVSS Score / Version | 7.8 (High) / CVSS v3.1 |
| Updated | 2026-09-29 |
| CVSS Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| CVSS Prose | attack vector is local; attack complexity is low; privileges required is low; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high. |
| Affected products | Microsoft Windows 11 (version 24H2), Microsoft Windows 11 (version 25H2), Microsoft Windows 11 (version 26H1), and Microsoft Windows Server 2025 |
| Classified as | CWE-125 (Out-of-bounds Read) |
| Vendor | Product | Affected Versions | Patch Status |
|---|---|---|---|
| Microsoft | Windows 11 (version 24H2) | ||
| Microsoft | Windows 11 (version 25H2) | ||
| Microsoft | Windows 11 (version 26H1) | ||
| Microsoft | Windows Server 2025 |
| Subsystems | OT Supporting Infrastructure |
| Sectors | All Sectors |
Out-of-bounds read in Microsoft Trace Data Helper allows an authorized attacker to elevate privileges locally.
Monitor Microsoft's web page for any future patch releases. See vendor advisory link below.