Is CVE-2022-21888 in the CISA KEV catalog?

No. CVE-2022-21888 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-21888?

CVE-2022-21888 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2022-21888?

CVE-2022-21888 has an EPSS score of 2.54% (83th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-21888?

Install KB5009557 for Windows 10 Version 1809. Fixes are available for 11 affected products.

CVE & CISA-KEV Catalog

CVE-2022-21888

HIGHEPSS 83th pctl

7.8

CVSS v3

NVD

Description

Windows Modern Execution Server Remote Code Execution Vulnerability

How to fix

Remediation Available

Windows 10 Version 1809Windows

Install:KB5009557Microsoft

Windows 10 Version 1909Windows

Install:KB5009545Microsoft

Windows 10 Version 20H2Windows

Install:KB5009543Microsoft

Windows 10 Version 21H1Windows

Install:KB5009543Microsoft

Windows 10 Version 21H2Windows

Install:KB5009543Microsoft

Windows 11 version 21H2Windows

Install:KB5009566Microsoft

Windows Server 2019Windows

Install:KB5009557Microsoft

Windows Server 2019 (Server Core installation)Windows

Install:KB5009557Microsoft

Windows Server 2022Windows

Install:KB5009555Microsoft

Windows Server 2022 (Server Core installation)Windows

Install:KB5009555Microsoft

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

Install:KB5009543Microsoft

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 RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

2.54%probability of exploitation in 30 days

83rdpercentile

Elevated risk: more likely to be exploited than 83% of all known CVEs.

References

Other references2

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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 2024-11-21.