March 25, 2022 · Applied Cybernetics Group
CVE-2022-21999 — Microsoft Windows
known ransomware use
Microsoft Windows Print Spooler Privilege Escalation Vulnerability
- Added to KEV
2022-03-25- Federal due date
2022-04-15- Vendor
- Microsoft
- Product
- Windows
- EPSS
- 98.5th percentile (score 0.417, as of
2026-07-13) - NVD CVSS v3.1
- —
- Ransomware use
- Known
- ATT&CK
- T1059 , T1068 , T1078 , T1136.001 , T1211 · signal rollup
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2022-21999
CISA short description
Microsoft Windows Print Spooler contains an unspecified vulnerability which can allow for privilege escalation.
Required action
Apply updates per vendor instructions.