CVE-2026-71343: Windows Remote Access Connection Manager Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows Remote Access Connection Manager allows an authorized attacker to execute code locally.
Other sources
Windows Remote Access Connection Manager Remote Code Execution Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
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Fixed in 10.0.14393.9512Patch KB5123099 - Upgrade
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Fixed in 10.0.28000.2954Patch KB5124012 - Upgrade
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Fixed in 6.2.9200.26349Patch KB5123065 - Upgrade
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Fixed in 6.3.9600.23397Patch KB5123066 - Upgrade
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Fixed in 10.0.19044.7725Patch KB5122878 - Upgrade
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Fixed in 10.0.22631.7582Patch KB5122880 - Upgrade
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Fixed in 10.0.26100.9445Patch KB5124008 - Upgrade
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Fixed in 10.0.26100.33438Patch KB5122871 - Upgrade
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Fixed in 10.0.19045.7725Patch KB5122878 - Upgrade
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Fixed in 10.0.26200.9445Patch KB5124008 - Upgrade
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Fixed in 10.0.20348.5622Patch KB5122882 - Upgrade
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Fixed in 10.0.17763.9245Patch KB5122876
Event History
Frequently Asked Questions
Who can exploit this vulnerability?
An attacker must already be authorized on the affected system and able to execute actions locally. The available information does not indicate that it can be exploited remotely or without prior access.
What is the potential impact after successful exploitation?
Successful exploitation can allow local code execution with high impacts to confidentiality, integrity, and availability. The vulnerability is a heap-based buffer overflow in Windows Remote Access Connection Manager.
Which systems should be assessed?
Assess Microsoft Windows 10 and Windows 11, plus Windows Server 2012, 2012 R2, 2016, 2019, 2022, and 2025. The provided data does not identify specific affected builds or patch levels.