Code Injection in Microsoft Windows and Windows Server - CVE-2021-28476
Published: May 11, 2021 / Updated: October 4, 2021
Vulnerability identifier: #VU53086
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-28476
CWE-ID: CWE-94
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to improper input validation in the Hyper-V. A remote authenticated attacker can execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
Microsoft Windows
Windows Server
Windows Server
How to mitigate CVE-2021-28476
Install updates from vendor's website.
Links to Public Exploits and PoC-codes
- Exploit #6815 - CVE-2021-28476-tools-env (tools for automate configure Ubuntu 20.04 enviroment for testing CVE-2021-28476.) (October 4, 2021)
- Exploit #6623 - CVE-2021-28476-tools-env (tools for automate configure Ubuntu 20.04 enviroment for testing CVE-2021-28476.) (August 15, 2021)
- Exploit #5511 - CVE-2021-28476 (PoC for CVE-2021-28476 a guest-to-host "Hyper-V Remote Code Execution Vulnerability" in vmswitch.sys.) (June 1, 2021)