CVE-2021-28476
Windows Hyper-V Remote Code Execution Vulnerability
Windows Hyper-V Remote Code Execution Vulnerability
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Windows Hyper-V Remote Code Execution Vulnerability
Windows Hyper-V Remote Code Execution Vulnerability
- Record
CVE-2021-28476- CVSS 3.1
- 9.9 Critical
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C - Updated
- 2026-11-02
EUVDEUVD-2021-15154
Windows Hyper-V Remote Code Execution Vulnerability
- Record
EUVD-2021-15154- CVSS 3.1
- 9.9 Critical
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-j6pv-9pg5-vg52
Hyper-V Remote Code Execution Vulnerability
Hyper-V Remote Code Execution Vulnerability
- Record
GHSA-j6pv-9pg5-vg52- CVSS 3.1
- 9.9 Critical
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H - Updated
- 2026-11-02
NVD
Windows Hyper-V Remote Code Execution Vulnerability
- Record
CVE-2021-28476- CVSS 3.1
- 9.9 Critical
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H - CVSS 2.0
- 6.5 Medium
AV:N/AC:L/Au:S/C:P/I:P/A:P - Updated
- 2026-11-02
Affected products
- microsoft windows 10 version 1507
- microsoft windows 10 version 1607
- microsoft windows 10 version 1803
- microsoft windows 10 version 1809
- microsoft windows 10 version 1909
- microsoft windows 10 version 2004
- microsoft windows 7 service pack 1
- microsoft windows 8.1
- microsoft windows server 2008 service pack 2
- microsoft windows server 2008 r2 service pack 1
- microsoft windows server 2008 r2 service pack 1 (server core installation)
- microsoft windows server 2008 service pack 2 (server core installation)
Show 14 moreShow less
- microsoft windows server 2012
- microsoft windows server 2012 (server core installation)
- microsoft windows server 2012 r2
- microsoft windows server 2012 r2 (server core installation)
- 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 version 2004
- microsoft windows server version 20h2
- microsoft windows server, version 1909 (server core installation)
- microsoft windows 10
- microsoft windows 7
- microsoft windows server 2008
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | 0vercl0k/CVE-2021-28476 | 2021-05-31 |
| PoC in GitHub | LaCeeKa/CVE-2021-28476-tools-env | 2021-08-15 |
| PoC in GitHub | australeo/CVE-2021-28476 | 2022-01-16 |
| PoC in GitHub | bluefrostsecurity/CVE-2021-28476 | 2021-06-02 |
| PoC in GitHub | dengyang123x/0vercl0k | 2022-04-17 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-28476 is a critical vulnerability (CVSS 9.9) in Microsoft Windows 10 Version 1507, published May 11, 2021. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 39.2%, the 98th percentile. No source names a fixed version.