CVE-2026-65681

Windows iSCSI Target Service Denial of Service Vulnerability

CVE-2026-65681 is fixed in 12 products on 1 platform, first by KB5120418, released August 11, 2026. It is not reported as exploited. Patch Radar priority: High.

High

CVSS

7.5

Important

Exploitation

None reported

Exploitation Less Likely

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0117

67th percentile

<p>Null pointer dereference in Windows iSCSI Target Service allows an unauthorized attacker to deny service over a network.</p>

Where it's fixed

Product	Fixed in	Fix	Released
Microsoft
Windows 10 Version 1607 for 32-bit Systems	14393.9418	KB5120418	Aug 11, 2026
Windows 10 Version 1607 for x64-based Systems	14393.9418	KB5120418	Aug 11, 2026
Windows 10 Version 1809 for 32-bit Systems	17763.9121	KB5120238	Aug 11, 2026
Windows 10 Version 1809 for x64-based Systems	17763.9121	KB5120238	Aug 11, 2026
Windows Server 2016	14393.9418	KB5120418	Aug 11, 2026
Windows Server 2016 (Server Core installation)	14393.9418	KB5120418	Aug 11, 2026
Windows Server 2019	17763.9121	KB5120238	Aug 11, 2026
Windows Server 2019 (Server Core installation)	17763.9121	KB5120238	Aug 11, 2026
Windows Server 2022	20348.5440	KB5120229	Aug 11, 2026
Windows Server 2022	20348.5499	KB5120242	Aug 11, 2026
Windows Server 2022 (Server Core installation)	20348.5440	KB5120229	Aug 11, 2026
Windows Server 2022 (Server Core installation)	20348.5499	KB5120242	Aug 11, 2026
Windows Server 2025	26100.33222	KB5120228	Aug 11, 2026
Windows Server 2025	26100.33296	KB5120233	Aug 11, 2026
Windows Server 2025 (Server Core installation)	26100.33222	KB5120228	Aug 11, 2026
Windows Server 2025 (Server Core installation)	26100.33296	KB5120233	Aug 11, 2026

Details

Published
August 11, 2026
Weakness
NULL Pointer Dereference
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65681

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