HIGH CISA KEV
CVE-2021-33771
CVSS v3
7.8
HIGH
EPSS Score
9.2 %
exploit probability
CISA KEV
Yes
known exploited
Exploitation
—
SSVC status
Description
Windows Kernel Elevation of Privilege Vulnerability
CISA Known Exploited Vulnerability
- Date Added
- 2021-11-03
- Patch Due Date
- 2021-11-17
- Ransomware Use
- Unknown
Technical details
- Published
- 2021-07-14
Frequently asked questions
What is CVE-2021-33771?
Windows Kernel Elevation of Privilege Vulnerability
Is CVE-2021-33771 actively exploited?
Yes. CVE-2021-33771 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2021-11-17.
What is the CVSS score for CVE-2021-33771?
CVE-2021-33771 has a CVSS v3 base score of 7.8 (HIGH severity).
Is CVE-2021-33771 affecting your environment?
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