Vulnerability in Microsoft Windows 10
CVE-2021-28476
Windows Hyper-V Remote Code Execution Vulnerability
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.392 (98.6th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 99th percentile — 98.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.386 · newest: 0.392 · change: +0.006
Affected products
- Microsoft Windows 10 — versions 20h2, 1607, 1803
- Microsoft Windows 10 Version 1507 — versions 10.0.0
- Microsoft Windows 10 Version 1607 — versions 10.0.0
- Microsoft Windows 10 Version 1803 — versions 10.0.0
- Microsoft Windows 10 Version 1809 — versions 10.0.0
- Microsoft Windows 10 Version 1909 — versions 10.0.0
- Microsoft Windows 10 Version 2004 — versions 10.0.0
- Microsoft Windows 7
- Microsoft Windows 7 Service Pack 1 — versions 6.1.0
- Microsoft Windows 8.1 — versions 6.3.0
Public proof-of-concept exploits
References
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-28476 (Patch, Vendor Advisory)
- packetstormsecurity.com/files/163497/Microsoft-Hyper-V-vmswitch.sys-Proof-Of-Co… (VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-28476?
- CVE-2021-28476 is a critical-severity vulnerability in Microsoft Windows 10. CVSS score: 9.9/10. Published 2021-05-11.
- How severe is CVE-2021-28476?
- Critical severity. CVSS v3 base score is 9.9 out of 10.
- Is CVE-2021-28476 known to be exploited?
- 30 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.