CVE-2026-73010: Microsoft Failover Cluster Remote Code Execution Vulnerability

CVE-2026-73010 PUBLISHED CVSS 9.8 CRITICAL

Microsoft Failover Cluster Remote Code Execution Vulnerability

Reported by microsoft · Published September 8, 2026

Use after free in Windows Failover Cluster allows an unauthorized attacker to execute code over a network.

Risk scores

CVSS 3.1

9.8

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Vendor	Product	Versions
Microsoft	Windows 10 Version 1809	10.0.17763.0
Microsoft	Windows Server 2019	10.0.17763.0
Microsoft	Windows Server 2019 (Server Core installation)	10.0.17763.0
Microsoft	Windows Server 2022	10.0.20348.0
Microsoft	Windows Server 2025	10.0.26100.0
Microsoft	Windows Server 2025 (Server Core installation)	10.0.26100.0
microsoft	windows_10_1809	10.0.17763.0
microsoft	windows_server_2022	10.0.20348.0
Microsoft	Windows Server 2019 (Server Core installation)	10.0.17763.0
Microsoft	Windows Server 2025 (Server Core installation)	10.0.26100.0
Microsoft	Windows Server 2022	10.0.20348.0
microsoft	windows_server_2019	10.0.17763.0
Microsoft	Windows 10 Version 1809	10.0.17763.0
Microsoft	Windows Server 2019	10.0.17763.0
Microsoft	Windows Server 2025	10.0.26100.0
microsoft	windows_server_2025	10.0.26100.0

The same record, from the CLI:

vulnetix vdb vuln CVE-2026-73010
vulnetix vdb fixes CVE-2026-73010

Or with curl, using the org id and key from your account page:

curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
  "https://api.vdb.vulnetix.com/v2/vuln/CVE-2026-73010/fixes/registry"

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