Microsoft · ServicingStack update · October 11, 2022

KB5018427: October 2022 cumulative update for Windows 11 22H2

KB5018427, released October 11, 2022, fixes 64 CVEs across 2 products. 3 of them are being exploited (CVE-2021-34527); 3 on CISA KEV. Patch Radar priority: Patch now. The product is no longer supported.

Patch now3 on CISA KEVKnown ransomware use1 publicly disclosedUnsupported product
CVEs closed
64
9 rated Critical
Exploited
3
CVE-2021-34527
Exploitation more likely
7
Vendor assessment
Highest EPSS
0.9979
99th percentile

Priority of the 64 CVEs

Patch now 3 Urgent 15 High 33 Routine 13

Applies to

ProductBuild after install
Windows 11 Version 22H2 for ARM64-based Systems22621.674
Windows 11 Version 22H2 for x64-based Systems22621.674

CVEs this fix closes

PriorityCVEComponentImpactCVSSEPSSExploitation
Patch now CVE-2021-34527 Windows Print Spooler Components Remote Code Execution 8.8 0.9979 KEVRansomwareDisclosedExploited
Patch now CVE-2022-38028 Windows Print Spooler Components Elevation of Privilege 7.8 0.1495 KEVExploited
Patch now CVE-2022-41033 Windows COM+ Event System Service Elevation of Privilege 7.8 0.0189 KEVExploited
Urgent CVE-2022-37974 Windows Perception Simulation Service Information Disclosure 6.5 0.3649 More likely
Urgent CVE-2022-37970 Windows DWM Core Library Elevation of Privilege 7.8 0.0977 More likely
Urgent CVE-2022-37989 Client Server Run-time Subsystem (CSRSS) Elevation of Privilege 7.8 0.0933 More likely
Urgent CVE-2022-37987 Client Server Run-time Subsystem (CSRSS) Elevation of Privilege 7.8 0.0910 More likely
Urgent CVE-2022-38050 Windows Win32K Elevation of Privilege 7.8 0.0732 More likely
Urgent CVE-2022-38051 Microsoft Graphics Component Elevation of Privilege 7.8 0.0732 More likely
Urgent CVE-2022-41081 Windows Point-to-Point Tunneling Protocol Remote Code Execution 8.1 0.0195 Exploitation Less Likely
Urgent CVE-2022-38000 Windows Point-to-Point Tunneling Protocol Remote Code Execution 8.1 0.0163 Exploitation Less Likely
Urgent CVE-2022-22035 Windows Point-to-Point Tunneling Protocol Remote Code Execution 8.1 0.0157 Exploitation Less Likely
Urgent CVE-2022-33634 Windows Point-to-Point Tunneling Protocol Remote Code Execution 8.1 0.0147 Exploitation Less Likely
Urgent CVE-2022-38047 Windows Point-to-Point Tunneling Protocol Remote Code Execution 8.1 0.0147 Exploitation Less Likely
Urgent CVE-2022-24504 Windows Point-to-Point Tunneling Protocol Remote Code Execution 8.1 0.0146 Exploitation Less Likely
Urgent CVE-2022-30198 Windows Point-to-Point Tunneling Protocol Remote Code Execution 8.1 0.0146 Exploitation Less Likely
Urgent CVE-2022-37997 Microsoft Graphics Component Elevation of Privilege 7.8 0.0068 More likely
Urgent CVE-2022-37979 Role: Windows Hyper-V Elevation of Privilege 7.8 0.0063 Exploitation Less Likely
High CVE-2022-38044 Windows CD-ROM Driver Remote Code Execution 7.8 0.5627 Exploitation Less Likely
High CVE-2022-38034 Windows Workstation Service Elevation of Privilege 8.8 0.0400 Exploitation Less Likely
High CVE-2022-37998 Windows Local Session Manager (LSM) Denial of Service 7.7 0.0380 Exploitation Less Likely
High CVE-2022-37973 Windows Local Session Manager (LSM) Denial of Service 7.7 0.0376 Exploitation Less Likely
High CVE-2022-38045 Windows Server Service Elevation of Privilege 8.8 0.0281 Exploitation Less Likely
High CVE-2022-33645 Windows TCP/IP Denial of Service 7.5 0.0267 Exploitation Less Likely
High CVE-2022-38041 Windows Secure Channel Denial of Service 7.5 0.0261 Exploitation Less Likely
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