TI-2017-00020 Aliases CVE-2017-0021 GHSA-53gh-w7rv-pj62

Hyper-V in Microsoft Windows 10 1607 and Windows Server 2016 does not properly validate…

MEDIUM 42Published 2017-03-17 · Updated 2024-08-05

Key facts

Attack vector: Adjacent network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA.

Summary

Hyper-V in Microsoft Windows 10 1607 and Windows Server 2016 does not properly validate vSMB packet data, which allows attackers to execute arbitrary code on a target OS, aka "Hyper-V System Data Structure Vulnerability." This vulnerability is different from that described in CVE-2017-0095.

Why it matters now

EPSS 0.01776 78th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Microsoft	Hyper-V vSMB	Hyper-V in Microsoft Windows 10 1607 and Windows Server 2016	—	No fix listed	CNA

Hyper-V vSMB VendorMicrosoft Affected Hyper-V in Microsoft Windows 10 1607 and Windows Server 2016 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:o:microsoft:windows_10:1607:::::::*	1607	Vulnerable	Microsoft
cpe:2.3:o:microsoft:windows_server_2016::::::::	all versions	Vulnerable	Microsoft

cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:*:* Versions 1607 Vulnerable ·Microsoft
cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Microsoft

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2017-0021
2026-10-03 Alias added: GHSA-53gh-w7rv-pj62

References

Patch 1

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0021

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Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences