Is CVE-2023-21527 in the CISA KEV catalog?

No. CVE-2023-21527 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-21527?

CVE-2023-21527 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2023-21527?

CVE-2023-21527 has an EPSS score of 1.98% (78th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-21527?

Install KB5022297 for Windows 10. Fixes are available for 23 affected products.

CVE & CISA-KEV Catalog

CVE-2023-21527

HIGHEPSS 78th pctl

7.5

CVSS v3

NVD

Description

Windows iSCSI Service Denial of Service Vulnerability

CWE-191

How to fix

Remediation Available

Windows 10Windows

Install:KB5022297Microsoft

Windows 10 Version 1607Windows

Install:KB5022289Microsoft

Windows 10 Version 1809Windows

Install:KB5022286Microsoft

Windows 10 Version 20H2Windows

Install:KB5022282Microsoft

Windows 10 Version 21H2Windows

Install:KB5022282Microsoft

Windows 10 Version 22H2Windows

Install:KB5022282Microsoft

Windows 11 Version 22H2Windows

Install:KB5022303Microsoft

Windows 11 version 21H2Windows

Install:KB5022287Microsoft

Windows 7Windows

Install:KB5022339Microsoft

Install:KB5022338Microsoft

Windows 8.1Windows

Install:KB5022346Microsoft

Install:KB5022352Microsoft

Windows RT 8.1Windows

Install:KB5022346Microsoft

Windows Server 2008Windows

Install:KB5022340Microsoft

Install:KB5022353Microsoft

Windows Server 2008 R2Windows

Install:KB5022339Microsoft

Install:KB5022338Microsoft

Windows Server 2012Windows

Install:KB5022343Microsoft

Install:KB5022348Microsoft

Windows Server 2012 (Server Core installation)Windows

Install:KB5022348Microsoft

Install:KB5022343Microsoft

Windows Server 2012 R2Windows

Install:KB5022346Microsoft

Install:KB5022352Microsoft

Windows Server 2012 R2 (Server Core installation)Windows

Install:KB5022346Microsoft

Install:KB5022352Microsoft

Windows Server 2016Windows

Install:KB5022289Microsoft

Windows Server 2016 (Server Core installation)Windows

Install:KB5022289Microsoft

Windows Server 2019Windows

Install:KB5022286Microsoft

Windows Server 2019 (Server Core installation)Windows

Install:KB5022286Microsoft

Windows Server 2022Windows

Install:KB5022291Microsoft

Windows Server 2022 (Server Core installation)Windows

Install:KB5022291Microsoft

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 VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

1.98%probability of exploitation in 30 days

78thpercentile

Elevated risk: more likely to be exploited than 78% of all known CVEs.

References

Other references1

msrc.microsoft.com

Embed a live status badge for CVE-2023-21527

Markdown

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HTML

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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.