CVE-2026-70207: Network Policy Server (NPS) Remote Code Execution Vulnerability
Heap-based buffer overflow in Network Policy Server (NPS) allows an authorized attacker to execute code over a network.
Other sources
Network Policy Server (NPS) 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 6.2.9200.26434Patch KB5126835 - Upgrade
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Fixed in 6.3.9600.23470Patch KB5126836 - Upgrade
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Fixed in 10.0.14393.9612Patch KB5126868 - Upgrade
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Fixed in 10.0.28000.3231Patch KB5127646 - Upgrade
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Fixed in 10.0.26100.33650Patch KB5126646 - Upgrade
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Fixed in 10.0.26100.9711Patch KB5127648 - Upgrade
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Fixed in 10.0.22631.7652Patch KB5126653 - 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 10.0.20348.5761Patch KB5126655 - Upgrade
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Fixed in 10.0.17763.9376Patch KB5126651 - Upgrade
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Fixed in 10.0.26300.9711Patch KB5127648
Event History
Frequently Asked Questions
Who can exploit this vulnerability?
An attacker must be authorized and able to reach the affected Network Policy Server over the network. User interaction is not required.
What is the potential impact of successful exploitation?
Successful exploitation can allow remote code execution, with high impacts to confidentiality, integrity, and availability.
Which systems should be reviewed for exposure?
Review deployments of Network Policy Server on the listed Windows 10, Windows 11, and Windows Server 2012 through Windows Server 2025 products. The provided data does not identify specific affected builds or configurations.
Does exploitation require a low-complexity attack?
No. The supplied severity vector rates attack complexity as high, indicating exploitation requires conditions beyond simple network reachability and authorization.