Is CVE-2022-21836 in the CISA KEV catalog?

No. CVE-2022-21836 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-21836?

CVE-2022-21836 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2022-21836?

CVE-2022-21836 has an EPSS score of 0.70% (49th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-21836?

Install KB5009585 for Windows 10. Fixes are available for 24 affected products.

CVE & CISA-KEV Catalog

CVE-2022-21836

HIGH

7.8

CVSS v3

NVD

Description

Windows Certificate Spoofing Vulnerability

CWE-295Improper Certificate Validation

How to fix

Remediation Available

Windows 10Windows

Install:KB5009585Microsoft

Windows 10 Version 1607Windows

Install:KB5009546Microsoft

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 7Windows

Install:KB5009621Microsoft

Install:KB5009610Microsoft

Windows 8.1Windows

Install:KB5009624Microsoft

Install:KB5009595Microsoft

Windows RT 8.1Windows

Install:KB5009624

Windows Server 2008Windows

Install:KB5009627Microsoft

Install:KB5009601Microsoft

Windows Server 2008 R2Windows

Install:KB5009621Microsoft

Install:KB5009610Microsoft

Windows Server 2012Windows

Install:KB5009619Microsoft

Install:KB5009586Microsoft

Windows Server 2012 (Server Core installation)Windows

Install:KB5009619Microsoft

Install:KB5009586Microsoft

Windows Server 2012 R2Windows

Install:KB5009624Microsoft

Install:KB5009595Microsoft

Windows Server 2012 R2 (Server Core installation)Windows

Install:KB5009595Microsoft

Install:KB5009624Microsoft

Windows Server 2016Windows

Install:KB5009546Microsoft

Windows Server 2016 (Server Core installation)Windows

Install:KB5009546Microsoft

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 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

0.70%probability of exploitation in 30 days

49thpercentile

Moderate risk: more likely to be exploited than 49% of all known CVEs.

References

Other references2

Related Vulnerabilities

Other CWE-295 (Improper Certificate Validation) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2015-4000	Low	3.7	100%	-	Fix
CVE-2020-0601	High	8.1	89%	KEV	Fix
CVE-2009-3555	Critical	9.8	87%	-	Fix
CVE-2022-26923	High	8.8	83%	KEV	Fix
CVE-2023-27823	Critical	9.8	53%	-	-
CVE-2022-42979	High	8.8	24%	-	-

Embed a live status badge for CVE-2022-21836

Markdown

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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.