Review reviewCritical

CVE-2026-65791

Microsoft Windows 10 Version 1607, Windows 10 Version 1809, Windows Server 2012

Heap-based buffer overflow in Windows iSCSI Target Service allows an unauthorized attacker to execute code over a network.

PRIORITY ASSESSMENT

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability-

Technical severityCVSS 9.8

Heap-based buffer overflow in Windows iSCSI Target Service allows an unauthorized attacker to execute code over a network.

Product: Microsoft Windows 10 Version 1607, Windows 10 Version 1809, Windows Server 2012
Affected versions: >= 10.0.14393.0 < 10.0.14393.9418, >= 10.0.17763.0 < 10.0.17763.9121, >= 6.2.9200.0 < 6.2.9200.26280, >= 6.3.9600.0 < 6.3.9600.23338, >= 10.0.20348.0 < 10.0.20348.5499, >= 10.0.26100.0 < 10.0.26100.33296, < 10.0.17763.9115, r2, < 10.0.20348.5440, < 10.0.26100.33222
Fixed versions: 10.0.14393.9418, 10.0.17763.9115, 10.0.20348.5440, 10.0.26100.33222

Confirm exposure before applying a vendor-supported change.

1
Identify
Confirm that Microsoft Windows 10 Version 1607, Windows 10 Version 1809, Windows Server 2012 and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.