CVE-2026-85811: Network Policy Server (NPS) Remote Code Execution Vulnerability
Network Policy Server (NPS) Remote Code Execution Vulnerability
Other sources
Use after free in Network Policy Server (NPS) allows an unauthorized attacker to execute code over an adjacent network.
— 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 10.0.26200.9711Patch KB5127648 - Upgrade
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Fixed in 10.0.14393.9612Patch KB5126868 - Upgrade
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Fixed in 10.0.19044.7807Patch KB5126657 - Upgrade
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Fixed in 6.2.9200.26434Patch KB5126835 - Upgrade
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Fixed in 10.0.20348.5761Patch KB5126655 - Upgrade
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Fixed in 6.3.9600.23470Patch KB5126836 - Upgrade
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Fixed in 10.0.26100.9711Patch KB5127648 - 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 10.0.26100.33650Patch KB5126646 - Upgrade
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Fixed in 10.0.22631.7652Patch KB5126653 - 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
Which systems are exposed to this vulnerability?
Systems running Network Policy Server (NPS) on the listed Microsoft Windows 10, Windows 11, or Windows Server 2012 through Server 2025 platforms may be exposed. The issue is associated with NPS rather than all installations of those operating systems.
What access does an attacker need to exploit the issue?
An attacker does not need prior privileges or user interaction, but must be able to attack the target over an adjacent network. The attack complexity is rated high.
What is the potential impact of successful exploitation?
Successful exploitation can allow unauthorized remote code execution. The supplied severity vector indicates potential high impact to confidentiality, integrity, and availability.