Is CVE-2022-21999 in the CISA KEV catalog?

Yes. CVE-2022-21999 is on the CISA Known Exploited Vulnerabilities list, added 2022-03-25, and has known ransomware campaign use.

What is the CVSS severity of CVE-2022-21999?

CVE-2022-21999 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2022-21999?

CVE-2022-21999 has an EPSS score of 41.68% (99th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-21999?

Install KB5010358 for Windows 10. Fixes are available for 24 affected products.

CVE & CISA-KEV Catalog

CVE-2022-21999

HIGHCISA KEVEPSS 99th pctl

7.8

CVSS v3

NVD

Description

Windows Print Spooler Elevation of Privilege Vulnerability

CWE-22Path Traversal CWE-59Link Following

How to fix

Remediation Available

Windows 10Windows

Install:KB5010358Microsoft

Windows 10 Version 1607Windows

Install:KB5010359Microsoft

Windows 10 Version 1809Windows

Install:KB5010351Microsoft

Windows 10 Version 1909Windows

Install:KB5010345Microsoft

Windows 10 Version 20H2Windows

Install:KB5010342Microsoft

Windows 10 Version 21H1Windows

Install:KB5010342Microsoft

Windows 10 Version 21H2Windows

Install:KB5010342Microsoft

Windows 11 version 21H2Windows

Install:KB5010386Microsoft

Windows 7Windows

Install:KB5010404Microsoft

Install:KB5010422Microsoft

Windows 8.1Windows

Install:KB5010419Microsoft

Install:KB5010395Microsoft

Windows RT 8.1Windows

Install:KB5010419

Windows Server 2008Windows

Install:KB5010384Microsoft

Install:KB5010403Microsoft

Windows Server 2008 R2Windows

Install:KB5010422Microsoft

Install:KB5010404Microsoft

Windows Server 2012Windows

Install:KB5010392Microsoft

Install:KB5010412Microsoft

Windows Server 2012 (Server Core installation)Windows

Install:KB5010392Microsoft

Install:KB5010412Microsoft

Windows Server 2012 R2Windows

Install:KB5010419Microsoft

Install:KB5010395Microsoft

Windows Server 2012 R2 (Server Core installation)Windows

Install:KB5010395Microsoft

Install:KB5010419Microsoft

Windows Server 2016Windows

Install:KB5010359Microsoft

Windows Server 2016 (Server Core installation)Windows

Install:KB5010359Microsoft

Windows Server 2019Windows

Install:KB5010351Microsoft

Windows Server 2019 (Server Core installation)Windows

Install:KB5010351Microsoft

Windows Server 2022Windows

Install:KB5010456

Install:KB5010354Microsoft

Windows Server 2022 (Server Core installation)Windows

Install:KB5010456

Install:KB5010354Microsoft

Windows Server, version 20H2 (Server Core Installation)Windows

Install:KB5010342Microsoft

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

41.68%probability of exploitation in 30 days

99thpercentile

Very high risk: more likely to be exploited than 99% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Microsoft Windows Print Spooler Privilege Escalation Vulnerability

Microsoft Windows Print Spooler contains an unspecified vulnerability which can allow for privilege escalation.

Apply updates per vendor instructions.

Remediation due: 2022-04-15

Associated with ransomware campaigns

References

Patch1

msrc.microsoft.com

Government Resource1

cisa.gov

Related Vulnerabilities

Other CWE-22 (Path Traversal) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-23897	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2023-32315	High	8.6	100%	KEV	Fix
CVE-2022-29464	Critical	9.8	100%	KEV + Ransom	-
CVE-2021-26086	Medium	5.3	100%	KEV	Fix
CVE-2021-22005	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2020-5902	Critical	9.8	100%	KEV + Ransom	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-10-30.