Heap-Based Buffer Overflow in Windows iSCSI Target Service
CVE-2026-65791

9.8CRITICAL

Key Information:

Vendor

Microsoft
Status
Windows 10 Version 1607
Windows 10 Version 1809
Windows Server 2012
Windows Server 2012 (server Core Installation)
Vendor
CVE Published:
11 August 2026

What is CVE-2026-65791?

A heap-based buffer overflow vulnerability in the Windows iSCSI Target Service could enable an unauthorized attacker to execute arbitrary code remotely. This flaw poses a significant risk as it can be exploited over the network, leading to potential control over affected systems without proper authorization. It's crucial for users and administrators to be aware of this vulnerability and apply necessary updates as specified in the vendor's advisory.

Affected Version(s)

Windows 10 Version 1607 32-bit Systems 10.0.14393.0 < 10.0.14393.9418

Windows 10 Version 1809 32-bit Systems 10.0.17763.0 < 10.0.17763.9115

Windows Server 2012 (Server Core installation) x64-based Systems 6.2.9200.0 < 6.2.9200.26279

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisorypatch

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.