CVE-2021-42274
Windows Hyper-V Discrete Device Assignment (DDA) Denial of Service Vulnerability
Windows Hyper-V Discrete Device Assignment (DDA) Denial of Service Vulnerability
Attack profile
How easy it is to exploit
- Attack vector
- Adjacent network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Windows Hyper-V Discrete Device Assignment (DDA) Denial of Service Vulnerability
Windows Hyper-V Discrete Device Assignment (DDA) Denial of Service Vulnerability
- Record
CVE-2021-42274- CVSS 3.1
- 6.8 Medium
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C - Updated
- 2026-11-02
EUVDEUVD-2021-29250
Windows Hyper-V Discrete Device Assignment (DDA) Denial of Service Vulnerability
- Record
EUVD-2021-29250- CVSS 3.1
- 6.8 Medium
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-pxcr-f852-7w3r
Windows Hyper-V Discrete Device Assignment (DDA) Denial of Service Vulnerability
Windows Hyper-V Discrete Device Assignment (DDA) Denial of Service Vulnerability
- Record
GHSA-pxcr-f852-7w3r- CVSS 3.1
- 6.8 Medium
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H - Updated
- 2026-11-02
NVD
Windows Hyper-V Discrete Device Assignment (DDA) Denial of Service Vulnerability
- Record
CVE-2021-42274- CVSS 3.1
- 6.8 Medium
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H - CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H - CVSS 2.0
- 2.1 Low
AV:L/AC:L/Au:N/C:N/I:N/A:P - Updated
- 2026-11-02
Affected products
- microsoft windows 10 version 1607
- microsoft windows 10 version 1809
- microsoft windows 10 version 2004
- microsoft windows 10 version 21h1
- microsoft windows 11 version 21h2
- microsoft windows server 2016
- microsoft windows server 2016 (server core installation)
- microsoft windows server 2019
- microsoft windows server 2019 (server core installation)
- microsoft windows server 2022
- microsoft windows server version 2004
- microsoft windows server version 20h2
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History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-42274 is a medium vulnerability (CVSS 6.8) in Microsoft Windows 10 Version 1607, published November 10, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.69%, the 53rd percentile. No source names a fixed version.