CVE-2026-44800 Microsoft CVE debrief

Who should care

Administrators and users of Windows 11 and Windows Server 2025 systems should be aware of this vulnerability and take necessary precautions to prevent local privilege escalation. This includes applying patches or mitigations as recommended by Microsoft and monitoring Windows Push Notifications for suspicious activity.

Technical summary

CVE-2026-44800 is a race condition vulnerability in Windows Push Notifications that allows an authorized attacker to elevate privileges locally. The vulnerability has a CVSS score of 7.8 and is classified as HIGH severity. This vulnerability affects Windows 11 and Windows Server 2025 systems. To exploit this vulnerability, an attacker would need to have authorized access to the system.

Defensive priority

Apply patches or mitigations as recommended by Microsoft to prevent local privilege escalation. Restrict access to sensitive areas of the system and monitor Windows Push Notifications for suspicious activity.

Recommended defensive actions

• Apply patches or mitigations as recommended by Microsoft
• Monitor Windows Push Notifications for suspicious activity
• Restrict access to sensitive areas of the system
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, but further information is limited. Verify affected systems and apply patches or mitigations as recommended. Review official advisories and CVE records to validate affected scope, severity, and vendor guidance. Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.

Official resources