CRITICAL 9.8 Microsoft

CVE-2023-36397

Windows Pragmatic General Multicast (PGM) Remote Code Execution Vulnerability

Microsoft Security Update 2023-Nov: Windows Pragmatic General Multicast (PGM) Remote Code Execution Vulnerability

Affected Products

Windows 10 Version 1809 for 32-bit Systems
Windows 10 Version 1809 for x64-based Systems
Windows 10 Version 1809 for ARM64-based Systems
Windows Server 2019
Windows Server 2019 (Server Core installation)
Windows Server 2022
Windows Server 2022 (Server Core installation)
Windows 11 version 21H2 for x64-based Systems

References

Published: 2023-11-14 · Source: Microsoft · Feed updated: 2026-09-03

This critical severity vulnerability with a CVSS score of 9.8 was published on 2023-11-14 via Microsoft. EPSS score: 17.5% (top 3% of all CVEs by exploitation probability). Affected: Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows 10 Version 1809 for ARM64-based Systems and 5 more.

Risk Timeline

CVE Disclosed2023-11-14 · 1023 days ago

Remediation Resources

Official Advisory

msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36397

NVD / MITRE

nvd.nist.gov/vuln/detail/CVE-2023-36397

Related Vulnerabilities

CVE	Title	Severity	CVSS
CVE-2025-49708	Microsoft Graphics Component Elevation of Privilege Vulnerability	CRITICAL	9.9
CVE-2021-26867	Windows Hyper-V Remote Code Execution Vulnerability	CRITICAL	9.9
CVE-2023-36028	Microsoft Protected Extensible Authentication Protocol (PEAP) Remote Code Execut	CRITICAL	9.8
CVE-2026-33824 PoC	Windows Internet Key Exchange (IKE) Service Extensions Remote Code Execution Vul	CRITICAL	9.8
CVE-2025-59287 PoC	Windows Server Update Service (WSUS) Remote Code Execution Vulnerability	CRITICAL	9.8
CVE-2022-30133	Windows Point-to-Point Protocol (PPP) Remote Code Execution Vulnerability	CRITICAL	9.8

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