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Security information for Hitachi Disk Array Systems

March 27, 2026
Hitachi, Ltd.

Hitachi Disk Array Systems have the following vulnerability.

Security Information ID

hitachi-sec-2026-304

Vulnerability description

CVE-2026-20846
GDI+ Denial of Service Vulnerability
CVE-2026-21222
Windows Kernel Information Disclosure Vulnerability
CVE-2026-21231
Windows Kernel Elevation of Privilege Vulnerability
CVE-2026-21234
Windows Connected Devices Platform Service Elevation of Privilege Vulnerability
CVE-2026-21235
Windows Graphics Component Elevation of Privilege Vulnerability
CVE-2026-21236
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
CVE-2026-21237
Windows Subsystem for Linux Elevation of Privilege Vulnerability
CVE-2026-21238
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
CVE-2026-21239
Windows Kernel Elevation of Privilege Vulnerability
CVE-2026-21240
Windows HTTP.sys Elevation of Privilege Vulnerability
CVE-2026-21242
Windows Subsystem for Linux Elevation of Privilege Vulnerability
CVE-2026-21244
Windows Hyper-V Remote Code Execution Vulnerability
CVE-2026-21246
Windows Graphics Component Elevation of Privilege Vulnerability
CVE-2026-21247
Windows Hyper-V Remote Code Execution Vulnerability
CVE-2026-21248
Windows Hyper-V Remote Code Execution Vulnerability
CVE-2026-21249
Windows NTLM Spoofing Vulnerability
CVE-2026-21253
Mailslot File System Elevation of Privilege Vulnerability
CVE-2026-21255
Windows Hyper-V Security Feature Bypass Vulnerability
CVE-2026-21508
Windows Storage Elevation of Privilege Vulnerability
CVE-2026-21510
Windows Shell Security Feature Bypass Vulnerability
CVE-2026-21513
MSHTML Framework Security Feature Bypass Vulnerability
CVE-2026-21519
Desktop Window Manager Elevation of Privilege Vulnerability
CVE-2026-21525
Windows Remote Access Connection Manager Denial of Service Vulnerability
CVE-2026-21533
Windows Remote Desktop Services Elevation of Privilege Vulnerability

Affected products

The following table shows the affected products.

Product
Name		 Hitachi Virtual Storage Platform 5200, 5600, 5200H, 5600H
Hitachi Virtual Storage Platform 5100, 5500, 5100H, 5500H
Vulnerability
ID

[Windows 10 for x64-based Systems (Version1809)]

CVE-2026-20846, CVE-2026-21222, CVE-2026-21231, CVE-2026-21234,
CVE-2026-21235, CVE-2026-21236, CVE-2026-21238, CVE-2026-21239,
CVE-2026-21240, CVE-2026-21244, CVE-2026-21246, CVE-2026-21247,
CVE-2026-21248, CVE-2026-21249, CVE-2026-21253, CVE-2026-21255,
CVE-2026-21508, CVE-2026-21510, CVE-2026-21513, CVE-2026-21519,
CVE-2026-21525, CVE-2026-21533

[Windows 10 for x64-based Systems (Version21H2)]

CVE-2026-20846, CVE-2026-21222, CVE-2026-21231, CVE-2026-21234,
CVE-2026-21235, CVE-2026-21236, CVE-2026-21237, CVE-2026-21238,
CVE-2026-21239, CVE-2026-21240, CVE-2026-21242, CVE-2026-21244,
CVE-2026-21246, CVE-2026-21247, CVE-2026-21248, CVE-2026-21249,
CVE-2026-21253, CVE-2026-21255, CVE-2026-21508, CVE-2026-21510,
CVE-2026-21513, CVE-2026-21519, CVE-2026-21525, CVE-2026-21533

The following products are not affected by the vulnerabilities:

  • Hitachi Virtual Storage Platform E590, E790, E990, E1090, E590H, E790H, E1090H
  • Hitachi Virtual Storage Platform G130, G150, G350, G370, G700, G900
  • Hitachi Virtual Storage Platform F350, F370, F700, F900
  • Hitachi Virtual Storage Platform G100, G200, G400, G600, G800
  • Hitachi Virtual Storage Platform F400, F600, F800
  • Hitachi Virtual Storage Platform N400, N600, N800

Action to be taken

Software update.
Please contact your authorized service representative for details on any corrective actions such as software updates and the schedule for their release.

References

Please refer to the Security Update Guide (Microsoft) about the vulnerabilities.

Revision history

  • March 27, 2026: This security information page is published.
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