Microsoft · Security update · January 10, 2023

KB5022352: January 2023 security update

KB5022352, released January 10, 2023, fixes 49 CVEs across 5 products. One of them is being exploited (CVE-2023-21674); 1 on CISA KEV. Patch Radar priority: Patch now.

Patch now1 on CISA KEV1 publicly disclosed
CVEs closed
49
9 rated Critical
Exploited
1
CVE-2023-21674
Exploitation more likely
4
Vendor assessment
Highest EPSS
0.3421
98th percentile

Priority of the 49 CVEs

Patch now 1 Urgent 13 High 30 Routine 5

Applies to

Product
Windows 8.1 for 32-bit systems
Windows 8.1 for x64-based systems
Windows RT 8.1
Windows Server 2012 R2
Windows Server 2012 R2 (Server Core installation)

CVEs this fix closes

PriorityCVEComponentImpactCVSSEPSSExploitation
Patch now CVE-2023-21674 Windows ALPC Elevation of Privilege 8.8 0.3421 KEVExploited
Urgent CVE-2023-21552 Microsoft Graphics Component Elevation of Privilege 7.8 0.0354 More likely
Urgent CVE-2023-21543 Windows Layer 2 Tunneling Protocol Remote Code Execution 8.1 0.0177 Exploitation Less Likely
Urgent CVE-2023-21556 Windows Layer 2 Tunneling Protocol Remote Code Execution 8.1 0.0150 Exploitation Less Likely
Urgent CVE-2023-21546 Windows Layer 2 Tunneling Protocol Remote Code Execution 8.1 0.0113 Exploitation Less Likely
Urgent CVE-2023-21555 Windows Layer 2 Tunneling Protocol Remote Code Execution 8.1 0.0113 Exploitation Less Likely
Urgent CVE-2023-21679 Windows Layer 2 Tunneling Protocol Remote Code Execution 8.1 0.0113 Exploitation Less Likely
Urgent CVE-2023-21535 Windows Secure Socket Tunneling Protocol (SSTP) Remote Code Execution 8.1 0.0111 Exploitation Less Likely
Urgent CVE-2023-21548 Windows Secure Socket Tunneling Protocol (SSTP) Remote Code Execution 8.1 0.0111 Exploitation Less Likely
Urgent CVE-2023-21541 Windows Task Scheduler Elevation of Privilege 7.8 0.0058 More likely
Urgent CVE-2023-21730 Windows Cryptographic Services Elevation of Privilege 7.8 0.0054 Exploitation Less Likely
Urgent CVE-2023-21726 Windows Credential Manager Elevation of Privilege 7.8 0.0046 More likely
Urgent CVE-2023-21532 Microsoft Graphics Component Elevation of Privilege 7.0 0.0046 More likely
Urgent CVE-2023-21561 Windows Cryptographic Services Elevation of Privilege 7.8 0.0045 Exploitation Less Likely
High CVE-2023-21746 Windows NTLM Elevation of Privilege 7.8 0.0243 Exploitation Less Likely
High CVE-2023-21557 Windows LDAP - Lightweight Directory Access Protocol Denial of Service 7.5 0.0208 Exploitation Less Likely
High CVE-2023-21757 Windows Remote Access Service L2TP Driver Denial of Service 7.5 0.0206 Exploitation Less Likely
High CVE-2023-21527 Windows iSCSI Denial of Service 7.5 0.0203 Exploitation Less Likely
High CVE-2023-21677 Windows IKE Extension Denial of Service 7.5 0.0203 Exploitation Less Likely
High CVE-2023-21683 Windows IKE Extension Denial of Service 7.5 0.0203 Exploitation Less Likely
High CVE-2023-21728 Microsoft Local Security Authority Server (lsasrv) Denial of Service 7.5 0.0203 Exploitation Less Likely
High CVE-2023-28297 Windows RPC API Elevation of Privilege 8.8 0.0166 Exploitation Less Likely
High CVE-2023-21549 Windows SMB Elevation of Privilege 8.8 0.0147 DisclosedExploitation Less Likely
High CVE-2023-21681 Microsoft WDAC OLE DB provider for SQL Remote Code Execution 8.8 0.0141 Exploitation Less Likely
High CVE-2023-21732 Windows ODBC Driver Remote Code Execution 8.8 0.0141 Exploitation Less Likely
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