CVE-2026-69521: Windows iSCSI Remote Code Execution Vulnerability
Integer overflow or wraparound in Windows iSCSI allows an unauthorized attacker to execute code over a network.
Other sources
Windows iSCSI Remote Code Execution Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
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Fixed in 6.2.9200.26349Patch KB5123065 - Upgrade
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Fixed in 10.0.14393.9512Patch KB5123099 - Upgrade
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Fixed in 10.0.22631.7582Patch KB5122880 - Upgrade
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Fixed in 6.3.9600.23398Patch KB5123066 - Upgrade
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Fixed in 10.0.28000.2954Patch KB5124012 - Upgrade
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Fixed in 10.0.20348.5622Patch KB5122882 - Upgrade
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Fixed in 10.0.19045.7725Patch KB5122878 - Upgrade
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Fixed in 10.0.19044.7725Patch KB5122878 - Upgrade
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Fixed in 10.0.26100.9445Patch KB5124008 - Upgrade
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Fixed in 10.0.26200.9445Patch KB5124008 - Upgrade
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Fixed in 10.0.26100.33438Patch KB5122871 - Upgrade
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Fixed in 10.0.17763.9245Patch KB5122876
Event History
Frequently Asked Questions
Which systems are listed as affected?
The affected software list includes Windows 10, Windows 11, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016, Windows Server 2019, Windows Server 2022, and Windows Server 2025.
Does exploitation require credentials or user interaction?
The supplied vector indicates no privileges are required (PR:N), but user interaction is required (UI:R). It also indicates network attack access (AV:N) and low attack complexity (AC:L).
What is the potential impact if exploitation succeeds?
The supplied impact metrics indicate high impact to confidentiality, integrity, and availability. The vulnerability is rated high severity with a CVSS score of 8.8.