CVE-2026-83748: Windows Error Reporting Remote Code Execution Vulnerability
Heap-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 10.0.22631.7652Patch KB5126653 - Upgrade
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Fixed in 10.0.19044.7807Patch KB5126657 - Upgrade
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Fixed in 10.0.14393.9612Patch KB5126868 - Upgrade
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Fixed in 10.0.28000.3231Patch KB5127646 - 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 6.2.9200.26434Patch KB5126835 - Upgrade
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Fixed in 6.3.9600.23470Patch KB5126836 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.9711Patch KB5127648 - 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 10.0.20348.5761Patch KB5126655 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.17763.9376Patch KB5126651
Event History
Frequently Asked Questions
Which systems should be prioritized for triage?
Prioritize Microsoft Windows 10 and Windows 11 endpoints, plus Windows Server 2012, 2012 R2, 2016, 2019, 2022, and 2025 systems. The vulnerability is remotely reachable and affects confidentiality, integrity, and availability.
Does exploitation require authentication or user interaction?
No. The supplied severity vector indicates network attack access, low attack complexity, no privileges required, and no user interaction.
What is the likely impact of successful exploitation?
An unauthorized attacker can execute code remotely through a heap-based buffer overflow in Windows Error Reporting. The listed impact includes high compromise potential for confidentiality, integrity, and availability.