CVE-2026-83643: Windows Error Reporting Remote Code Execution Vulnerability
Stack-based buffer overflow in Windows Error Reporting allows an unauthorized attacker to execute code over a network.
Other sources
Windows Error Reporting Remote Code Execution Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.14393.9612Patch KB5126868 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.9711Patch KB5127648 - Upgrade
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Fixed in 6.2.9200.26434Patch KB5126835 - Upgrade
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Fixed in 6.3.9600.23470Patch KB5126836 - Upgrade
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Fixed in 10.0.26300.9711Patch KB5127648 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.33650Patch KB5126646 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26200.9711Patch KB5127648 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.22631.7652Patch KB5126653 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.28000.3231Patch KB5127646 - Upgrade
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Fixed in 10.0.19044.7807Patch KB5126657 - 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
Which systems should be prioritized for review?
Systems running the listed Microsoft Windows client or server versions should be reviewed: Windows 10, Windows 11, and Windows Server 2012, 2012 R2, 2016, 2019, 2022, and 2025.
Can an unauthenticated attacker exploit this remotely?
The vector is network-based and no privileges are required, so authentication is not required according to the supplied severity vector. However, user interaction is required.
What is the potential impact of successful exploitation?
Successful exploitation can allow code execution and has high assessed impact on confidentiality, integrity, and availability.