CVE-2026-96246 Microsoft CVE debrief

Who should care

System administrators and security teams responsible for Windows and Windows Server systems should assess exposure and apply patches. This includes teams managing Windows 10, Windows 11, and Windows Server environments.

Why it matters

CVE-2026-96246 is a Network Policy Server (NPS) Information Disclosure Vulnerability with a CVSS score of 7.5. It allows unauthorized attackers to disclose information over a network. Multiple Windows versions and server releases are affected. Microsoft has released patches for these vulnerabilities. System administrators and security teams should assess exposure, apply patches, review network policy server configurations, and monitor for suspicious activity.

• Potential unauthorized information disclosure over the network.
• Need to verify affected versions and apply patches.
• Requires review of network policy server configurations and monitoring for suspicious activity.
• Remediation priority is high due to the potential for information disclosure.

Technical summary

An out-of-bounds read vulnerability in Network Policy Server (NPS) can allow an unauthorized attacker to disclose information over a network. The vulnerability affects multiple versions of Windows 10, Windows 11, and various Windows Server editions. Affected product deployments should be confirmed in managed environments, with an owner assigned for follow-up. Review of official advisories or CVE records is necessary to validate affected scope, severity, and vendor guidance. Planning for vendor-supported updates or mitigations through normal change control is also

Defensive priority

Apply patches immediately for affected Windows versions and servers to prevent potential information disclosure.

Recommended defensive actions

• Apply patches for affected Windows 10, Windows 11, and Windows Server versions.
• Review and update inventory of affected systems.
• Monitor for potential unauthorized information disclosure attempts.

Evidence notes

The CVE record and NVD entry provide details on the vulnerability and affected systems. Microsoft's official advisory offers patches for the vulnerability.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.