CVE-2026-56198: Microsoft Trace Data Helper Elevation of Privilege Vulnerability
Published Sep 8, 2026
·Updated
Microsoft Trace Data Helper Elevation of Privilege Vulnerability
Other sources
Out-of-bounds read in Microsoft Trace Data Helper allows an authorized attacker to elevate privileges locally.
— Microsoft
Affected Software
15 affected componentsFixes available
Microsoft Windows 11=26H1
10.0.28000.2954
Microsoft Windows 11=24H2
10.0.26100.9445
Microsoft Windows 11=24H2
10.0.26100.9445
Microsoft Windows 11=26H1
10.0.28000.2954
Microsoft Windows 11=25H2
10.0.26200.9445
Microsoft Windows Server 2025<10.0.26100.33438
10.0.26100.33438
Microsoft Windows Server 2025<10.0.26100.33438
10.0.26100.33438
Microsoft Windows 11=25H2
10.0.26200.9445
Microsoft Windows 11 24h2<10.0.26100.9445
Microsoft Windows 11 24h2<10.0.26100.9445
Microsoft Windows 11 25h2<10.0.26200.9445
Microsoft Windows 11 25h2<10.0.26200.9445
Microsoft Windows 11 26h1<10.0.28000.2954
Microsoft Windows 11 26h1<10.0.28000.2954
Microsoft Windows Server 2025<10.0.26100.33438
Remediation
Event History
Sep 8, 2026
CVE Published
via Microsoft·02:00 PM
Data Sourced
via Microsoft·02:00 PM
DescriptionSeverityWeakness
Data Sourced
via Microsoft·02:00 PM
Affected Software
Updated
via Microsoft·02:00 PM
Description
CVE Published
via MITRE·05:14 PM
Data Sourced
via MITRE·05:14 PM
DescriptionSeverity
Data Sourced
via NVD·06:17 PM
RemedyDescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
Who is exposed to this vulnerability?
Systems running Microsoft Windows 11 or Microsoft Windows Server 2025 are listed as affected. Exploitation is local, so the attacker must be able to run code or otherwise operate on the target system.
2
What access does an attacker need to exploit it?
The vulnerability requires low privileges and does not require user interaction. It can be used by an authorized local attacker to elevate privileges.
3
What is the potential impact after successful exploitation?
Successful exploitation can result in elevated privileges on the affected Windows system. The published vector rates confidentiality, integrity, and availability impact as high.