VulnerabilityModified
CVE-2021-28476
Windows Hyper-V Remote Code Execution Vulnerability
CRITICAL 9.9EPSS 38.6%
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 38.6%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
Description
Windows Hyper-V Remote Code Execution Vulnerability
- CVSS 3.1
- 9.9 CRITICALCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- EPSS
- 38.63% probability · 98th percentile
- CISA KEV
- Not listed
- Affected
- microsoft/windows 10 · microsoft/windows 7 · microsoft/windows 8.1 · microsoft/windows server 2008 · microsoft/windows server 2012 · microsoft/windows server 2016 · microsoft/windows server 2019
- Source
- secure@microsoft.com
References
- http://packetstormsecurity.com/files/163497/Microsoft-Hyper-V-vmswitch.sys-Proof-Of-Concept.htmlThird Party Advisory, VDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-28476Patch, Vendor Advisory
- http://packetstormsecurity.com/files/163497/Microsoft-Hyper-V-vmswitch.sys-Proof-Of-Concept.htmlThird Party Advisory, VDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-28476Patch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.