CVE-2021-33758
Windows Hyper-V Denial of Service Vulnerability
HIGH
7.7
CVSS Score
Published: July 14, 2021 at 05:53 PM UTC
Updated: August 10, 2026 at 04:17 PM UTC
3 products affected across 1 vendorWindows Server 2016Windows 10 1607Windows 10
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Severity
HIGH7.7
Exploit prediction
EPSS 3%
SSVC
No known exploit
Description
Windows Hyper-V Denial of Service Vulnerability
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
10.0.14393.0 ≤ v < 10.0.14393.453010.0.14393.0
Affected range stops below 10.0.14393.4530, so it looks safe — our inference, not a vendor statement
10.0.14393.0 ≤ v < 10.0.14393.453010.0.14393.0
Affected range stops below 10.0.14393.4530, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (2)
PatchVendor Advisory
Source: [email protected]
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-33758Vendor AdvisoryPatch
Source: cverecord
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-33758SSVC — Action Prioritization
SSVCNo known exploitNot automatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
7.7HIGHmicrosoft
Vector?
Quick Info
StatusMODIFIED
CWE
NVD-CWE-noinfo
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