CVE-2021-34450
published 2021-07-16CVE-2021-34450: Windows Hyper-V Remote Code Execution Vulnerability
PriorityP263critical9.9CVSS 3.1
AVNACLPRLUINSCCHIHAH
EPSS
2.20%
80.7th percentile
Windows Hyper-V Remote Code Execution Vulnerability
Affected
22 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | windows_10 | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10_version_1809 | >= 10.0.0 < 10.0.17763.2061 | 10.0.17763.2061 |
| microsoft | windows_10_version_1909 | >= 10.0.0 < 10.0.18363.1679 | 10.0.18363.1679 |
| microsoft | windows_10_version_2004 | >= 10.0.0 < 10.0.19041.1110 | 10.0.19041.1110 |
| microsoft | windows_10_version_21h1 | >= 10.0.0 < 10.0.19043.1110 | 10.0.19043.1110 |
| microsoft | windows_server_2016 | — | — |
| microsoft | windows_server_2016 | — | — |
| microsoft | windows_server_2019 | >= 10.0.0 < 10.0.17763.2061 | 10.0.17763.2061 |
| microsoft | windows_server_version_2004 | >= 10.0.0 < 10.0.19041.1110 | 10.0.19041.1110 |
| microsoft | windows_server_version_20h2 | >= 10.0.0 < 10.0.19042.1110 | 10.0.19042.1110 |
| msrc | windows_10_version_1809_for_x64-based_systems | — | — |
| msrc | windows_10_version_1909_for_x64-based_systems | — | — |
| msrc | windows_10_version_2004_for_x64-based_systems | — | — |
| msrc | windows_10_version_20h2_for_x64-based_systems | — | — |
| msrc | windows_10_version_21h1_for_x64-based_systems | — | — |
| msrc | windows_server_2019 | — | — |
| msrc | windows_server_version_2004 | — | — |
| msrc | windows_server_version_20h2 | — | — |
Detection & IOCsextracted from sources · hover to see the quote
- →Exploitation requires an authenticated attacker operating from within a guest VM, sending specially crafted file operation requests targeting VM hardware resources to achieve RCE on the host server. Monitor for anomalous guest-to-host file operation requests in Hyper-V environments. ↗
- ·Exploitation has not been publicly disclosed or observed in the wild at time of advisory publication; exploitation is rated 'Less Likely' for both latest and older software releases. ↗
CVSS provenance
nvdv3.19.9CRITICALCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
nvdv2.09.0CRITICALAV:N/AC:L/Au:S/C:C/I:C/A:C
vendor_msrc8.5HIGH
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GHSA
GHSA-58c9-m4j7-84m4: Windows Hyper-V Remote Code Execution Vulnerability
ghsa_unreviewed·2022-05-24
CVE-2021-34450 [CRITICAL] GHSA-58c9-m4j7-84m4: Windows Hyper-V Remote Code Execution Vulnerability
Windows Hyper-V Remote Code Execution Vulnerability
Microsoft
Windows Hyper-V Remote Code Execution Vulnerability
vendor_msrc·2021-07-13·CVSS 8.5
CVE-2021-34450 [HIGH] Windows Hyper-V Remote Code Execution Vulnerability
Windows Hyper-V Remote Code Execution Vulnerability
FAQ: How would an attacker exploit this vulnerability?
This vulnerability would require an authenticated attacker on a guest VM to send specially crafted file operation requests on the VM to hardware resources on the VM which could result in remote code execution on the host server.
Role: Windows Hyper-V: Role: Windows Hyper-V
Microsoft: Microsoft
Impact: Remote Code Execution
Exploit Status: Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely;Older Software Release:Exploitation Less Likely;DOS:N/A
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5004244
Reference: https://support.microsoft.com/help/5004244
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=
No detection rules found.
No public exploits indexed.
Tenable
Microsoft’s July 2021 Patch Tuesday Includes 116 CVEs (CVE-2021-31979, CVE-2021-33771)
blogs_tenable·2021-07-13·CVSS 7.8
[HIGH] Microsoft’s July 2021 Patch Tuesday Includes 116 CVEs (CVE-2021-31979, CVE-2021-33771)
## Cloud Exposure
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## Vulnerability Exposure
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## AI Exposure
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## OT/IoT Exposure
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## Identity Exposure
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## Business needs
Active Directory
AI Security Posture Management (AI-SPM)
AWS security
Azure security
Cloud Security Posture Man
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2021-07-16
Published