Vulnerability in Microsoft Windows 10
CVE-2021-26867
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: 0.029 (86.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 86.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.028 · newest: 0.029 · change: +0.000
Affected products
- Microsoft Windows 10 — versions 20h2, 1909, 2004
- Microsoft Windows 10 Version 1909 — versions 10.0.0
- Microsoft Windows 10 Version 2004 — versions 10.0.0
- Microsoft Windows Server 2016 — versions 20h2, 1909, 2004
- Microsoft Windows Server, Version 1909 (Server Core Installation) — versions 10.0.0
- Microsoft Windows Server Version 2004 — versions 10.0.0
- Microsoft Windows Server Version 20h2 — versions 10.0.0
Public proof-of-concept exploits
References
- af854a3a-2127-422b-91ae-364da2661108 (Patch, Vendor Advisory)
- msrc.microsoft.com/update-guide/vulnerability/CVE-2021-26867 (vendor-advisory, patch)
Frequently asked questions
- What is CVE-2021-26867?
- CVE-2021-26867 is a critical-severity vulnerability in Microsoft Windows 10. CVSS score: 9.9/10. Published 2021-03-11.
- How severe is CVE-2021-26867?
- Critical severity. CVSS v3 base score is 9.9 out of 10.
- Is CVE-2021-26867 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.