CVE-2026-88099
Analyzed Analyzed - Analysis Complete

Windows Failover Cluster Uncaught Exception DoS Vulnerability

Publication date: 2026-10-13

Last updated on: 2026-10-16

Assigner: Microsoft Corporation

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

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-10-13
Last Modified
2026-10-16
Generated
2026-10-19
AI Q&A
2026-10-14
EPSS Evaluated
2026-10-18
NVD
CVE-2026-88099
EUVD
EUVD-2026-99651

Affected Vendors & Products

Showing 3 associated CPEs
Vendor Product Version / Range
microsoft windows_server_2025 to 10.0.26100.33650 (exc)
microsoft windows_server_2022 to 10.0.20348.5761 (exc)
microsoft windows_server_2019 to 10.0.17763.9376 (exc)

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-248 An exception is thrown from a function, but it is not caught.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This vulnerability is an uncaught exception in Windows Failover Cluster that allows an unauthorized attacker to cause a denial of service over a network. It does not require authentication or user interaction.

Impact Analysis

An attacker could exploit this to disrupt services relying on Windows Failover Cluster, causing downtime for critical systems. The impact is limited to service availability as no data is accessed or modified.

Mitigation Strategies

Apply the latest security updates from Microsoft for Windows Failover Cluster to address the uncaught exception vulnerability. Monitor Microsoft's update guide for patches and install them promptly.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-88099. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart