KEV · Actively exploited
CVE-2021-31956
HIGH 7.8
Vendor bulletin scale — NVD CVSS pending
KEV
Windows NTFS Elevation of Privilege Vulnerability
EPSS
20.27%
moderate exploit risk
percentile 97.2%
CISA Known Exploited Vulnerability
- Added to KEV
- 2021-11-03
- Remediation deadline
- 2021-11-17
- Required action
- Apply updates per vendor instructions.
- Ransomware
- Unknown (not documented by CISA)
OS versions that fix this CVE
This CVE is resolved by the following OS security releases. Update the OS to at least the listed version.
- Windows Server 2019 Fixed in 10.0.17763.1999
- Windows Server 2016 Fixed in 10.0.14393.4467
- Windows 10 21H1 · 2021-H1 Fixed in 10.0.19043.1052
- Windows 10 20H2 · 2020-H2 Fixed in 10.0.19042.1052
- Windows 10 2004 · 2020-04 Fixed in 10.0.19041.1052
- Windows 10 1909 · 2019-09 Fixed in 10.0.18363.1621
- Windows 10 1809 · 2018-09 Fixed in 10.0.17763.1999
- Windows 10 1607 · 2016-07 Fixed in 10.0.14393.4467