CVE-2026-88102

Summary

A use-after-free vulnerability in Windows Failover Cluster allows unauthorized remote code execution when an attacker sends specially crafted network requests to a cluster node. This flaw can be exploited by any unauthenticated user over the network.

Exploitability

Exploitation is likely straightforward for network-based attackers with minimal preconditions, requiring only the ability to send crafted packets to vulnerable cluster nodes.

Blast radius

The impact could be severe across enterprise environments that use Windows Failover Clusters, potentially allowing attackers to gain full control over affected cluster nodes and compromise entire cluster resources.

Detection

No reliable host or network indicator is derivable from the published description.

Prioritized remediation

Apply the latest Windows updates containing the fix for CVE-2026-88102, specifically the August 2026 security updates for Windows Server 2019, Windows Server 2022, and Windows Server 2025.

Analysis generated locally by garnet-coder (no data left the box). AI-assisted — verify against primary sources before acting.