CRITICAL 9.8 Microsoft PoC

CVE-2022-26809

Remote Procedure Call Runtime Remote Code Execution Vulnerability

Microsoft Security Update 2022-Apr: Remote Procedure Call Runtime 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 10 Version 1909 for 32-bit Systems
Windows 10 Version 1909 for x64-based Systems
Windows 10 Version 1909 for ARM64-based Systems

References

Published: 2022-04-12 · Source: Microsoft · Feed updated: 2026-08-21

This critical severity vulnerability with a CVSS score of 9.8 was published on 2022-04-12 via Microsoft. 🚨 A public proof-of-concept exploit is available on GitHub. EPSS score: 90.5% (top 0% 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 Disclosed2022-04-12 · 1591 days ago

Public PoC Exploit AvailableWeaponised proof-of-concept code is publicly accessible

Remediation Resources

Official Advisory

msrc.microsoft.com/update-guide/vulnerability/CVE-2022-26809

NVD / MITRE

nvd.nist.gov/vuln/detail/CVE-2022-26809

Related Vulnerabilities

CVE	Title	Severity	CVSS
CVE-2020-1472 PoC	Netlogon Elevation of Privilege Vulnerability	CRITICAL	10.0
CVE-2026-33824 KEV PoC	Windows Internet Key Exchange (IKE) Service Extensions Remote Code Execution Vul	CRITICAL	9.8
CVE-2026-62815	Microsoft QUIC Remote Code Execution Vulnerability	CRITICAL	9.8
CVE-2026-62878	Windows DNS Server Remote Code Execution Vulnerability	CRITICAL	9.8
CVE-2026-62893	Windows Deployment Services TFTP Server Remote Code Execution Vulnerability	CRITICAL	9.8
CVE-2026-65791	Windows iSCSI Target Service Remote Code Execution Vulnerability	CRITICAL	9.8

vulnfeed aggregates 9909 vulnerabilities from NVD, CISA KEV, Ubuntu, Debian, Red Hat, Kubernetes, Exploit-DB, OSS-Security, GitHub and OpenStack — updated every 4 hours.