SARA / Free Tools / KEV / CVE-2022-21999

CVE-2022-21999 on CISA KEV

Windows Print Spooler Elevation of Privilege Vulnerability

CISA KEV — Actively Exploited

Microsoft Windows Print Spooler Privilege Escalation Vulnerability

Vendor / Product
— / Microsoft / Windows
Added to KEV
2022-03-25
BOD 22-01 due
2022-04-15
Ransomware use
Known
CVSS / EPSS
7.8 HIGH · EPSS 72.72%

01What CISA says about this vulnerability

Windows Print Spooler Elevation of Privilege Vulnerability

02Required action — verbatim from CISA

Apply updates per vendor instructions.

03Notes & references

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

VendorProductVersions
MicrosoftWindows 10 Version 180910.0.17763.0
MicrosoftWindows 10 Version 180910.0.0
MicrosoftWindows Server 201910.0.17763.0
MicrosoftWindows Server 2019 (Server Core installation)10.0.17763.0
MicrosoftWindows 10 Version 190910.0.0
MicrosoftWindows 10 Version 21H110.0.0
MicrosoftWindows Server 202210.0.20348.0
MicrosoftWindows 10 Version 20H210.0.0
MicrosoftWindows Server version 20H210.0.0
MicrosoftWindows 11 version 21H210.0.0
MicrosoftWindows 10 Version 21H210.0.19043.0
MicrosoftWindows 10 Version 150710.0.10240.0
MicrosoftWindows 10 Version 160710.0.14393.0
MicrosoftWindows Server 201610.0.14393.0
MicrosoftWindows Server 2016 (Server Core installation)10.0.14393.0
MicrosoftWindows 76.1.0
MicrosoftWindows 7 Service Pack 16.1.0
MicrosoftWindows 8.16.3.0
MicrosoftWindows Server 2008 Service Pack 26.0.6003.0
MicrosoftWindows Server 2008 Service Pack 2 (Server Core installation)6.0.6003.0
MicrosoftWindows Server 2008 Service Pack 26.0.6003.0
MicrosoftWindows Server 2008 R2 Service Pack 16.1.7601.0
MicrosoftWindows Server 2008 R2 Service Pack 1 (Server Core installation)6.1.7601.0
MicrosoftWindows Server 20126.2.9200.0
MicrosoftWindows Server 2012 (Server Core installation)6.2.9200.0
MicrosoftWindows Server 2012 R26.3.9600.0
MicrosoftWindows Server 2012 R2 (Server Core installation)6.3.9600.0

06Detection

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection:

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