Is CVE-2023-21800 in the CISA KEV catalog?

No. CVE-2023-21800 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-21800?

CVE-2023-21800 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2023-21800?

CVE-2023-21800 has an EPSS score of 1.06% (60th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-21800?

Install KB5022890 for Windows Server 2008. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2023-21800

HIGH

7.8

CVSS v3

NVD

Description

Windows Installer Elevation of Privilege Vulnerability

CWE-73External Control of File Name or Path

How to fix

Remediation Available

Windows Server 2008Windows

Install:KB5022890Microsoft

Install:KB5022893Microsoft

Windows Server 2008 R2Windows

Install:KB5022872Microsoft

Install:KB5022874Microsoft

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

1.06%probability of exploitation in 30 days

60thpercentile

Moderate risk: more likely to be exploited than 60% of all known CVEs.

References

Patch1

msrc.microsoft.com

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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.