CVE-2026-70038: Windows iSCSI Remote Code Execution Vulnerability
Use after free 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
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.28000.3231Patch KB5127646 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.19044.7807Patch KB5126657 - Upgrade
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Fixed in 10.0.26100.33650Patch KB5126646 - Upgrade
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Fixed in 6.2.9200.26434Patch KB5126835 - Upgrade
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Fixed in 10.0.26300.9711Patch KB5127648 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.14393.9612Patch KB5126868 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.9711Patch KB5127648 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26200.9711Patch KB5127648 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.22631.7652Patch KB5126653 - Upgrade
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Fixed in 10.0.17763.9376Patch KB5126651 - Upgrade
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Fixed in 10.0.20348.5761Patch KB5126655 - Upgrade
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Fixed in 6.3.9600.23470Patch KB5126836
Event History
Frequently Asked Questions
Which systems should be prioritized for review?
Review systems running the listed Windows 10, Windows 11, or Windows Server versions, particularly where the Windows iSCSI component is enabled and reachable over the network.
Does exploitation require authentication or user interaction?
The provided vector indicates that no privileges and no user interaction are required. Exploitation is network-based, although the attack complexity is rated high.
What is the potential impact if exploitation succeeds?
Successful exploitation can allow remote code execution. The supplied severity vector rates confidentiality, integrity, and availability impact as high.