CVE-2026-88099

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

CVSS v3 5.9 MEDIUM

5.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88099	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:microsoft:windows_server_2019:::::::x64:*
	cpe:2.3:o:microsoft:windows_server_2022:::::::x64:*
	cpe:2.3:o:microsoft:windows_server_2025:::::::x64:*

History

16 Oct 2026, 15:43

Type	Values Removed	Values Added
CPE		cpe:2.3:o:microsoft:windows_server_2019:::::::x64:* cpe:2.3:o:microsoft:windows_server_2025:::::::x64:* cpe:2.3:o:microsoft:windows_server_2022:::::::x64:*
First Time		Microsoft windows Server 2025 Microsoft windows Server 2019 Microsoft Microsoft windows Server 2022
References	~~() https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88099 -~~	() https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88099 - Patch, Vendor Advisory

13 Oct 2026, 19:21

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-13 19:21

Updated : 2026-10-16 15:43

NVD link : CVE-2026-88099

Mitre link : CVE-2026-88099

CVE.ORG link : CVE-2026-88099

JSON object : View

Products Affected

microsoft

windows_server_2025
windows_server_2019
windows_server_2022

CWE

CWE-248

Uncaught Exception

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