CVE-2026-102192: Windows Failover Cluster Denial of Service Vulnerability
Published Oct 13, 2026
·Updated
Integer underflow (wrap or wraparound) in Windows Failover Cluster allows an unauthorized attacker to deny service over a network.
Other sources
Windows Failover Cluster Denial of Service Vulnerability
— Microsoft
Affected Software
9 affected componentsFixes available
Microsoft Windows Server 2025<10.0.26100.33650
10.0.26100.33650
Microsoft Windows Server 2025<10.0.26100.33650
10.0.26100.33650
Microsoft Windows Server 2022<10.0.20348.5761
10.0.20348.5761
Microsoft Windows Server 2019<10.0.17763.9376
10.0.17763.9376
Microsoft Windows Server 2022<10.0.20348.5761
10.0.20348.5761
Microsoft Windows Server 2019<10.0.17763.9376
10.0.17763.9376
Microsoft Windows Server 2019<10.0.17763.9376
Microsoft Windows Server 2022<10.0.20348.5761
Microsoft Windows Server 2025<10.0.26100.33650
Remediation
Event History
Oct 13, 2026
CVE Published
via Microsoft·02:00 PM
Data Sourced
via Microsoft·02:00 PM
DescriptionSeverityWeaknessAffected Software
CVE Published
via MITRE·07:01 PM
Data Sourced
via MITRE·07:01 PM
DescriptionSeverity
Data Sourced
via NVD·07:17 PM
RemedyDescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
Which systems are exposed to this issue?
The affected software listed is Microsoft Windows Server 2019, Windows Server 2022, and Windows Server 2025. Exposure is limited to systems using the Windows Failover Cluster component.
2
Does exploitation require credentials or user interaction?
No. The supplied vector indicates network-based exploitation with low attack complexity, no privileges required, and no user interaction required.
3
What impact should responders expect from successful exploitation?
Successful exploitation can deny service through Windows Failover Cluster. The provided impact data indicates availability impact only, with no stated confidentiality or integrity impact.