Use after free in Microsoft QUIC allows an unauthorized attacker to disclose information over a network.
History

Fri, 16 Oct 2026 19:00:00 +0000

Type Values Removed Values Added
First Time appeared Microsoft .net
Microsoft native.quic.msquic.schannel
Microsoft visual Studio 2026
Microsoft windows 11 23h2
Microsoft windows 11 24h2
Microsoft windows 11 25h2
Microsoft windows 11 26h1
Microsoft windows 11 26h2
CPEs cpe:2.3:a:microsoft:.net:10.0.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net:11.0.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net:8.0.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net:9.0.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:native.quic.msquic.schannel:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:visual_studio_2026:*:*:*:*:*:*:*:*
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_24h2:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_11_26h2:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_11_26h2:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:x64:*
Vendors & Products Microsoft .net
Microsoft native.quic.msquic.schannel
Microsoft visual Studio 2026
Microsoft windows 11 23h2
Microsoft windows 11 24h2
Microsoft windows 11 25h2
Microsoft windows 11 26h1
Microsoft windows 11 26h2

Tue, 13 Oct 2026 22:30:00 +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 Use after free in Microsoft QUIC allows an unauthorized attacker to disclose information over a network.
Title Microsoft QUIC Information Disclosure Vulnerability
First Time appeared Microsoft
Microsoft microsoft.native.quic.msquic.schannel
Microsoft microsoft Visual Studio 2026 Version 18.10
Microsoft visual Studio 2022
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-416
CPEs cpe:2.3:a:microsoft:microsoft.native.quic.msquic.schannel:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:microsoft_visual_studio_2026_version_18.10:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*
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:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft microsoft.native.quic.msquic.schannel
Microsoft microsoft Visual Studio 2026 Version 18.10
Microsoft visual Studio 2022
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': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C'}


cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published: 2026-10-13T19:00:04.810Z

Updated: 2026-10-23T17:46:44.025Z

Reserved: 2026-09-04T18:08:54.992Z

Link: CVE-2026-85790

cve-icon Vulnrichment

Updated: 2026-10-13T20:11:44.773Z

cve-icon NVD

Status : Analyzed

Published: 2026-10-13T19:21:02.243

Modified: 2026-10-22T22:19:25.830

Link: CVE-2026-85790

cve-icon Redhat

No data.