CVE-2026-83874: Windows Event Tracing Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows Event Tracing allows an unauthorized attacker to execute code over a network.
Other sources
Windows Event Tracing Remote Code Execution Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
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Fixed in 6.3.9600.23470Patch KB5126836 - Upgrade
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Fixed in 6.2.9200.26434Patch KB5126835 - Upgrade
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Fixed in 10.0.14393.9612Patch KB5126868 - Upgrade
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Fixed in 10.0.26100.33650Patch KB5126646 - Upgrade
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Fixed in 10.0.28000.3231Patch KB5127646 - Upgrade
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Fixed in 10.0.26100.9711Patch KB5127648 - Upgrade
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Fixed in 10.0.26200.9711Patch KB5127648 - Upgrade
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Fixed in 10.0.19044.7807Patch KB5126657 - Upgrade
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Fixed in 10.0.22631.7652Patch KB5126653 - Upgrade
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Fixed in 10.0.26300.9711Patch KB5127648 - Upgrade
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Fixed in 10.0.17763.9376Patch KB5126651 - Upgrade
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Fixed in 10.0.20348.5761Patch KB5126655
Event History
Frequently Asked Questions
Does exploitation require an authenticated account or local access?
No authenticated privileges are required, and the attack vector is network-based. However, the CVSS vector indicates that user interaction is required.
Which Windows platforms are listed as affected?
The affected software list includes Windows 10, Windows 11, and Windows Server 2012, 2012 R2, 2016, 2019, 2022, and 2025.
What is the potential impact if exploitation succeeds?
Successful exploitation can result in code execution and is rated as having high confidentiality, integrity, and availability impact. The CVSS vector indicates the impact remains within the vulnerable system's security authority.