Uncaught exception in Windows Failover Cluster allows an unauthorized attacker to deny service over a network.

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Windows Server 2019 Subscribe
Windows Server 2019 (server Core Installation) Subscribe
Windows Server 2022 Subscribe
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Windows Server 2025 (server Core Installation) Subscribe
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Fixes

Solution

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Workaround

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History

Thu, 15 Oct 2026 20:00:00 +0000

Type Values Removed Values Added
First Time appeared Microsoft windows Server 2019 (server Core Installation)
Microsoft windows Server 2025 (server Core Installation)
Vendors & Products Microsoft windows Server 2019 (server Core Installation)
Microsoft windows Server 2025 (server Core Installation)

Wed, 14 Oct 2026 00:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 13 Oct 2026 19:15:00 +0000

Type Values Removed Values Added
Description Uncaught exception in Windows Failover Cluster allows an unauthorized attacker to deny service over a network.
Title Windows Failover Cluster Denial of Service Vulnerability
First Time appeared Microsoft
Microsoft windows Server 2019
Microsoft windows Server 2022
Microsoft windows Server 2025
Weaknesses CWE-248
CPEs cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft windows Server 2019
Microsoft windows Server 2022
Microsoft windows Server 2025
References
Metrics cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-10-16T13:23:08.518Z

Reserved: 2026-09-09T21:51:51.953Z

Link: CVE-2026-88099

cve-icon Vulnrichment

Updated: 2026-10-13T19:58:11.012Z

cve-icon NVD

Status : Analyzed

Published: 2026-10-13T19:21:27.800

Modified: 2026-10-16T15:43:48.160

Link: CVE-2026-88099

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-15T19:45:13Z

Weaknesses