Null pointer dereference in Microsoft QUIC allows an unauthorized attacker to deny service over a network.

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Windows 11 23h2 Subscribe
Windows 11 24h2 Subscribe
Windows 11 25h2 Subscribe
Windows 11 26h1 Subscribe
Windows 11 Version 26h2 For Arm64-based Systems Subscribe
Windows Server 2022 Subscribe
Windows Server 2025 Subscribe
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Fixes

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Workaround

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History

Tue, 10 Nov 2026 18:30:00 +0000

Type Values Removed Values Added
Description Null pointer dereference in Microsoft QUIC allows an unauthorized attacker to deny service over a network.
Title Microsoft QUIC Denial of Service Vulnerability
First Time appeared Microsoft
Microsoft windows 11 23h2
Microsoft windows 11 24h2
Microsoft windows 11 25h2
Microsoft windows 11 26h1
Microsoft windows 11 Version 26h2 For Arm64-based Systems
Microsoft windows Server 2022
Microsoft windows Server 2025
Weaknesses CWE-476
CPEs cpe:2.3:a:microsoft:windows_11_version_26h2_for_arm64-based_systems:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_11_23H2:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_11_23H2:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_11_24H2:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_11_25H2:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_11_26H1:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft windows 11 23h2
Microsoft windows 11 24h2
Microsoft windows 11 25h2
Microsoft windows 11 26h1
Microsoft windows 11 Version 26h2 For Arm64-based Systems
Microsoft windows Server 2022
Microsoft windows Server 2025
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-11-10T19:35:55.341Z

Reserved: 2026-09-09T22:05:19.671Z

Link: CVE-2026-88236

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-11-10T19:21:32.550

Modified: 2026-11-10T19:21:32.667

Link: CVE-2026-88236

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses