Microsoft · Security update · October 10, 2023

KB5031364: October 2023 cumulative update for Windows Server 2022

KB5031364, released October 10, 2023, fixes 80 CVEs across 2 products. 3 of them are being exploited (CVE-2023-44487); 3 on CISA KEV. Patch Radar priority: Patch now.

Patch now3 on CISA KEV1 publicly disclosed
CVEs closed
80
13 rated Critical
Exploited
3
CVE-2023-44487
Exploitation more likely
10
Vendor assessment
Highest EPSS
1.0000
99th percentile

Priority of the 80 CVEs

Patch now 3 Urgent 22 High 47 Routine 8

Applies to

ProductBuild after install
Windows Server 202220348.2031
Windows Server 2022 (Server Core installation)20348.2031

CVEs this fix closes

PriorityCVEComponentImpactCVSSEPSSExploitation
Patch now CVE-2023-44487 HTTP/2 Denial of Service 7.5 1.0000 KEVExploited
Patch now CVE-2023-36563 Microsoft WordPad Information Disclosure 6.5 0.2032 KEVDisclosedExploited
Patch now CVE-2023-36584 Windows Mark of the Web (MOTW) Security Feature Bypass 5.4 0.0325 KEVExploited
Urgent CVE-2023-38171 Microsoft QUIC Denial of Service 7.5 0.7105 More likely
Urgent CVE-2023-41772 Windows Win32K Elevation of Privilege 7.8 0.1331 More likely
Urgent CVE-2023-36594 Microsoft Graphics Component Elevation of Privilege 7.8 0.0800 More likely
Urgent CVE-2023-36713 Windows Common Log File System Driver Information Disclosure 5.5 0.0733 More likely
Urgent CVE-2023-36731 Windows Win32K Elevation of Privilege 7.8 0.0662 More likely
Urgent CVE-2022-37967 Windows Kerberos Elevation of Privilege 7.2 0.0416 More likely
Urgent CVE-2023-38159 Microsoft Graphics Component Elevation of Privilege 7.0 0.0406 More likely
Urgent CVE-2023-36743 Windows Win32K Elevation of Privilege 7.8 0.0363 More likely
Urgent CVE-2023-35349 Windows Message Queuing Remote Code Execution 9.8 0.0289 Exploitation Less Likely
Urgent CVE-2023-36697 Windows Message Queuing Remote Code Execution 6.8 0.0220 Exploitation Less Likely
Urgent CVE-2023-36776 Windows Win32K Elevation of Privilege 7.0 0.0205 More likely
Urgent CVE-2023-36718 Windows Virtual Trusted Platform Module Remote Code Execution 7.8 0.0133 Exploitation Less Likely
Urgent CVE-2023-41773 Windows Layer 2 Tunneling Protocol Remote Code Execution 8.1 0.0131 Exploitation Less Likely
Urgent CVE-2023-41774 Windows Layer 2 Tunneling Protocol Remote Code Execution 8.1 0.0131 Exploitation Less Likely
Urgent CVE-2023-38166 Windows Layer 2 Tunneling Protocol Remote Code Execution 8.1 0.0130 Exploitation Less Likely
Urgent CVE-2023-41765 Windows Layer 2 Tunneling Protocol Remote Code Execution 8.1 0.0130 Exploitation Less Likely
Urgent CVE-2023-41767 Windows Layer 2 Tunneling Protocol Remote Code Execution 8.1 0.0130 Exploitation Less Likely
Urgent CVE-2023-41768 Windows Layer 2 Tunneling Protocol Remote Code Execution 8.1 0.0130 Exploitation Less Likely
Urgent CVE-2023-41769 Windows Layer 2 Tunneling Protocol Remote Code Execution 8.1 0.0130 Exploitation Less Likely
Urgent CVE-2023-41770 Windows Layer 2 Tunneling Protocol Remote Code Execution 8.1 0.0130 Exploitation Less Likely
Urgent CVE-2023-41771 Windows Layer 2 Tunneling Protocol Remote Code Execution 8.1 0.0130 Exploitation Less Likely
Urgent CVE-2023-36732 Windows Win32K Elevation of Privilege 7.8 0.0063 More likely
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