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CVE-2023-32083: Microsoft Failover Cluster Information Disclosure Vulnerability

• Severity: medium (CVSS 4.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-07-11 · updated 2026-06-17
• Weakness: CWE-122

Description

Microsoft Failover Cluster Information Disclosure Vulnerability

Affected products

• Microsoft Windows Server 2016: all versions
• Microsoft Windows Server 2019: all versions
• Microsoft Windows Server 2022: all versions
• Microsoft Windows Server 2016: from 10.0.14393.0 before 10.0.14393.6085 — fixed in 10.0.14393.6085
• Microsoft Windows Server 2019: from 10.0.17763.0 before 10.0.17763.4645 — fixed in 10.0.17763.4645
• Microsoft Windows Server 2022: from 10.0.20348.0 before 10.0.20348.1850 — fixed in 10.0.20348.1850

How to fix

Upgrade to a fixed version: Microsoft Windows Server 2016 10.0.14393.6085; Microsoft Windows Server 2019 10.0.17763.4645; Microsoft Windows Server 2022 10.0.20348.1850. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-32083
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-32083

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