Medium · 6.5 CVE-2026-68898 EUVD-2026-73415GHSA-4mp7-wvf4-345g

Windows iSCSI Denial of Service Vulnerability

Published Sep 8, 2026 · Updated Nov 10, 2026 · Assigned by microsoft

Vendor: Microsoft Product: Windows 10 Version 1607 Product: Windows 10 Version 1809 Product: Windows 10 Version 21H2 Product: Windows 10 Version 22H2 Product: Windows 11 version 23H2 Product: Windows 11 Version 24H2 Product: Windows 11 Version 25H2 Product: Windows 11 version 26H1 Product: Windows Server 2012 Product: Windows Server 2012 (Server Core installation) Product: Windows Server 2012 R2 Product: Windows Server 2012 R2 (Server Core installation) Product: Windows Server 2016 Product: Windows Server 2016 (Server Core installation) Product: Windows Server 2019 Product: Windows Server 2019 (Server Core installation) Product: Windows Server 2022 Product: Windows Server 2025 Product: Windows Server 2025 (Server Core installation) Platform: Windows

Description

Out-of-bounds read in Windows iSCSI allows an unauthorized attacker to deny service over a network.

Affected products

Vendor	Product	Affected	Fixed
Microsoft	Windows 10 Version 1607	10.0.14393.0 – < 10.0.14393.9512	10.0.14393.9512
Microsoft	Windows 10 Version 1809	10.0.17763.0 – < 10.0.17763.9245	10.0.17763.9245
Microsoft	Windows 10 Version 21H2	10.0.19044.0 – < 10.0.19044.7725	10.0.19044.7725
Microsoft	Windows 10 Version 22H2	10.0.19045.0 – < 10.0.19045.7725	10.0.19045.7725
Microsoft	Windows 11 version 23H2	10.0.22631.0 – < 10.0.22631.7582	10.0.22631.7582
Microsoft	Windows 11 Version 24H2	10.0.26100.0 – < 10.0.26100.9445	10.0.26100.9445
Microsoft	Windows 11 Version 25H2	10.0.26200.0 – < 10.0.26200.9445	10.0.26200.9445
Microsoft	Windows 11 version 26H1	10.0.28000.0 – < 10.0.28000.2954	10.0.28000.2954
Microsoft	Windows Server 2012	6.2.9200.0 – < 6.2.9200.26349	6.2.9200.26349
Microsoft	Windows Server 2012 (Server Core installation)	6.2.9200.0 – < 6.2.9200.26349	6.2.9200.26349
Microsoft	Windows Server 2012 R2	6.3.9600.0 – < 6.3.9600.23398	6.3.9600.23398
Microsoft	Windows Server 2012 R2 (Server Core installation)	6.3.9600.0 – < 6.3.9600.23398	6.3.9600.23398
Microsoft	Windows Server 2016	10.0.14393.0 – < 10.0.14393.9512	10.0.14393.9512
Microsoft	Windows Server 2016 (Server Core installation)	10.0.14393.0 – < 10.0.14393.9512	10.0.14393.9512
Microsoft	Windows Server 2019	10.0.17763.0 – < 10.0.17763.9245	10.0.17763.9245
Microsoft	Windows Server 2019 (Server Core installation)	10.0.17763.0 – < 10.0.17763.9245	10.0.17763.9245
Microsoft	Windows Server 2022	10.0.20348.0 – < 10.0.20348.5622	10.0.20348.5622
Microsoft	Windows Server 2025	10.0.26100.0 – < 10.0.26100.33438	10.0.26100.33438
Microsoft	Windows Server 2025 (Server Core installation)	10.0.26100.0 – < 10.0.26100.33438	10.0.26100.33438

Advisories 1

WID-SEC-2026-3243 Microsoft Windows: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 4, 2026

References

Windows iSCSI Denial of Service Vulnerability vendor-advisory patch