CVE-2026-73010: Microsoft Failover Cluster Remote Code Execution Vulnerability
Microsoft Failover Cluster Remote Code Execution Vulnerability
Other sources
Use after free in Windows Failover Cluster allows an unauthorized attacker to execute code over a 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 10.0.17763.9245Patch KB5122876 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.33438Patch KB5122871 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.20348.5622Patch KB5122882
Event History
Frequently Asked Questions
Which systems are in scope based on the listed affected software?
The listed affected software includes Microsoft Windows 10 and Microsoft Windows Server 2019, Windows Server 2022, and Windows Server 2025. The vulnerability is in Windows Failover Cluster.
Does exploitation require authentication, user interaction, or local access?
No. The vector indicates network exploitation with low attack complexity, no privileges required, and no user interaction required.
What level of impact could successful exploitation have?
Successful exploitation could allow remote code execution. The provided metrics indicate high impact to confidentiality, integrity, and availability.