CVE-2026-65791: Windows iSCSI Target Service Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows iSCSI Target Service allows an unauthorized attacker to execute code over a network.
Other sources
Windows iSCSI Target Service 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 6.3.9600.23337Patch KB5120386 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.14393.9418Patch KB5120418 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.2.9200.26279Patch KB5120385 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.33296Fixed in 10.0.26100.33222Patch KB5120228 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.20348.5499Fixed in 10.0.20348.5440Patch KB5120229 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.17763.9115Patch KB5120238
Event History
Frequently Asked Questions
What is the severity of CVE-2026-65791?
CVE-2026-65791 has a critical severity rating of 9.8.
What type of vulnerability is CVE-2026-65791?
CVE-2026-65791 is a heap-based buffer overflow vulnerability.
How do I fix CVE-2026-65791?
To fix CVE-2026-65791, update to the latest patched version of Microsoft Windows.
Which systems are affected by CVE-2026-65791?
CVE-2026-65791 affects Microsoft Windows 10, Windows Server versions from 2012 to 2025, and Windows iSCSI Target Service.
What is the impact of exploiting CVE-2026-65791?
Exploitation of CVE-2026-65791 can allow an unauthorized attacker to execute arbitrary code on the vulnerable system.