Multiple vulnerabilities in Microsoft Windows Hyper-V
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2021-40461 CVE-2021-38672 |
| CWE-ID | CWE-94 |
| Exploitation vector | Local network |
| Public exploit | N/A |
| Vulnerable software |
Windows Operating systems & Components / Operating system Windows Server Operating systems & Components / Operating system |
| Vendor | Microsoft |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Code Injection
EUVDB-ID: #VU57307
Risk: Medium
CVSSv4.0: 4.8 [CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2021-40461
CWE-ID:
CWE-94 - Improper Control of Generation of Code ('Code Injection')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to improper input validation in Windows Hyper-V. A remote authenticated attacker on the local network can send a specially crafted request and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsWindows: 10 Mobile - 11 21H2 10.0.22000.194
Windows Server: 2019 10.0.17763.1 - 2019 2004
CPE2.3- cpe:2.3:o:microsoft:windows:10:Mobile:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows:10:Gold:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows:10:S:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows:10_20H2:10.0.19042.572:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows:10_21H1:10.0.19043.985:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows:10_1507:10.0.10240.16405:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows:10_1511:10.0.10586.3:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows:10_1607:10.0.14393.10:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows:10_1703:10.0.15063.138:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows:10_1709:10.0.16299.19:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_server:2019_2004:*:*:*:*:*:*:*
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-40461
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the local network (LAN).
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Code Injection
EUVDB-ID: #VU57308
Risk: Medium
CVSSv4.0: 4.8 [CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2021-38672
CWE-ID:
CWE-94 - Improper Control of Generation of Code ('Code Injection')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to improper input validation in Windows Hyper-V. A remote authenticated attacker on the local network can send a specially crafted request and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsWindows: 11 21H2 10.0.22000.194
Windows Server: 2022 10.0.20348.202
CPE2.3- cpe:2.3:o:microsoft:windows:11_21H2:10.0.22000.194:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_server:2022:10.0.20348.202:*:*:*:*:*:*
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38672
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the local network (LAN).
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
