{
  "fix": "KB5022338",
  "url": "https://patchblox.com/security/fix/microsoft/kb5022338",
  "summary": "KB5022338, released January 10, 2023, fixes 40 CVEs across 4 products. None of them is reported as exploited. Patch Radar priority: Urgent. The product is no longer supported.",
  "platform": "microsoft",
  "type": "kb",
  "releaseKind": "Security",
  "title": "January 2023 security update",
  "released": "2023-01-10T14:00:00Z",
  "priority": "Urgent",
  "priorityTier": 2,
  "priorityReason": "Closes CVE-2023-21552, exploitation more likely",
  "supported": false,
  "cveCount": 40,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.0547,
  "maxCvss": 8.8,
  "vendorAdvisory": "https://support.microsoft.com/help/5022338",
  "appliesTo": [
    {
      "product": "Windows 7 for 32-bit Systems Service Pack 1",
      "productUrl": "https://patchblox.com/security/product/microsoft/windows-7-for-32-bit-systems-service-pack-1",
      "fixedVersion": "",
      "supported": false
    },
    {
      "product": "Windows 7 for x64-based Systems Service Pack 1",
      "productUrl": "https://patchblox.com/security/product/microsoft/windows-7-for-x64-based-systems-service-pack-1",
      "fixedVersion": "",
      "supported": false
    },
    {
      "product": "Windows Server 2008 R2 for x64-based Systems Service Pack 1",
      "productUrl": "https://patchblox.com/security/product/microsoft/windows-server-2008-r2-for-x64-based-systems-service-pack-1",
      "fixedVersion": "",
      "supported": false
    },
    {
      "product": "Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)",
      "productUrl": "https://patchblox.com/security/product/microsoft/windows-server-2008-r2-for-x64-based-systems-service-pack-1-server-core-installation",
      "fixedVersion": "",
      "supported": false
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2023-21552",
      "url": "https://patchblox.com/security/cve/CVE-2023-21552",
      "title": "Windows GDI Elevation of Privilege Vulnerability",
      "component": "Microsoft Graphics Component",
      "impact": "Elevation of Privilege",
      "priority": "Urgent",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.03537,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-21543",
      "url": "https://patchblox.com/security/cve/CVE-2023-21543",
      "title": "Windows Layer 2 Tunneling Protocol (L2TP) Remote Code Execution Vulnerability",
      "component": "Windows Layer 2 Tunneling Protocol",
      "impact": "Remote Code Execution",
      "priority": "Urgent",
      "severity": "Critical",
      "cvss": 8.1,
      "epss": 0.0177,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-21556",
      "url": "https://patchblox.com/security/cve/CVE-2023-21556",
      "title": "Windows Layer 2 Tunneling Protocol (L2TP) Remote Code Execution Vulnerability",
      "component": "Windows Layer 2 Tunneling Protocol",
      "impact": "Remote Code Execution",
      "priority": "Urgent",
      "severity": "Critical",
      "cvss": 8.1,
      "epss": 0.01504,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-21546",
      "url": "https://patchblox.com/security/cve/CVE-2023-21546",
      "title": "Windows Layer 2 Tunneling Protocol (L2TP) Remote Code Execution Vulnerability",
      "component": "Windows Layer 2 Tunneling Protocol",
      "impact": "Remote Code Execution",
      "priority": "Urgent",
      "severity": "Critical",
      "cvss": 8.1,
      "epss": 0.01133,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-21555",
      "url": "https://patchblox.com/security/cve/CVE-2023-21555",
      "title": "Windows Layer 2 Tunneling Protocol (L2TP) Remote Code Execution Vulnerability",
      "component": "Windows Layer 2 Tunneling Protocol",
      "impact": "Remote Code Execution",
      "priority": "Urgent",
      "severity": "Critical",
      "cvss": 8.1,
      "epss": 0.01133,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-21679",
      "url": "https://patchblox.com/security/cve/CVE-2023-21679",
      "title": "Windows Layer 2 Tunneling Protocol (L2TP) Remote Code Execution Vulnerability",
      "component": "Windows Layer 2 Tunneling Protocol",
      "impact": "Remote Code Execution",
      "priority": "Urgent",
      "severity": "Critical",
      "cvss": 8.1,
      "epss": 0.01133,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-21548",
      "url": "https://patchblox.com/security/cve/CVE-2023-21548",
      "title": "Windows Secure Socket Tunneling Protocol (SSTP) Remote Code Execution Vulnerability",
      "component": "Windows Secure Socket Tunneling Protocol (SSTP)",
      "impact": "Remote Code Execution",
      "priority": "Urgent",
      "severity": "Critical",
      "cvss": 8.1,
      "epss": 0.01114,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-21541",
      "url": "https://patchblox.com/security/cve/CVE-2023-21541",
      "title": "Windows Task Scheduler Elevation of Privilege Vulnerability",
      "component": "Windows Task Scheduler",
      "impact": "Elevation of Privilege",
      "priority": "Urgent",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00577,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-21730",
      "url": "https://patchblox.com/security/cve/CVE-2023-21730",
      "title": "Microsoft Cryptographic Services Elevation of Privilege Vulnerability",
      "component": "Windows Cryptographic Services",
      "impact": "Elevation of Privilege",
      "priority": "Urgent",
      "severity": "Critical",
      "cvss": 7.8,
      "epss": 0.00535,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-21726",
      "url": "https://patchblox.com/security/cve/CVE-2023-21726",
      "title": "Windows Credential Manager User Interface Elevation of Privilege Vulnerability",
      "component": "Windows Credential Manager",
      "impact": "Elevation of Privilege",
      "priority": "Urgent",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00464,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-21532",
      "url": "https://patchblox.com/security/cve/CVE-2023-21532",
      "title": "Windows GDI Elevation of Privilege Vulnerability",
      "component": "Microsoft Graphics Component",
      "impact": "Elevation of Privilege",
      "priority": "Urgent",
      "severity": "Important",
      "cvss": 7,
      "epss": 0.00461,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-21561",
      "url": "https://patchblox.com/security/cve/CVE-2023-21561",
      "title": "Microsoft Cryptographic Services Elevation of Privilege Vulnerability",
      "component": "Windows Cryptographic Services",
      "impact": "Elevation of Privilege",
      "priority": "Urgent",
      "severity": "Critical",
      "cvss": 7.8,
      "epss": 0.00446,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-21752",
      "url": "https://patchblox.com/security/cve/CVE-2023-21752",
      "title": "Windows Backup Service Elevation of Privilege Vulnerability",
      "component": "Windows Backup Engine",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.1,
      "epss": 0.0547,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-21746",
      "url": "https://patchblox.com/security/cve/CVE-2023-21746",
      "title": "Windows NTLM Elevation of Privilege Vulnerability",
      "component": "Windows NTLM",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.02431,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-21557",
      "url": "https://patchblox.com/security/cve/CVE-2023-21557",
      "title": "Windows Lightweight Directory Access Protocol (LDAP) Denial of Service Vulnerability",
      "component": "Windows LDAP - Lightweight Directory Access Protocol",
      "impact": "Denial of Service",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.5,
      "epss": 0.02081,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-21757",
      "url": "https://patchblox.com/security/cve/CVE-2023-21757",
      "title": "Windows Layer 2 Tunneling Protocol (L2TP) Denial of Service Vulnerability",
      "component": "Windows Remote Access Service L2TP Driver",
      "impact": "Denial of Service",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.5,
      "epss": 0.02063,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-21527",
      "url": "https://patchblox.com/security/cve/CVE-2023-21527",
      "title": "Windows iSCSI Service Denial of Service Vulnerability",
      "component": "Windows iSCSI",
      "impact": "Denial of Service",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.5,
      "epss": 0.02032,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-21728",
      "url": "https://patchblox.com/security/cve/CVE-2023-21728",
      "title": "Windows Netlogon Denial of Service Vulnerability",
      "component": "Microsoft Local Security Authority Server (lsasrv)",
      "impact": "Denial of Service",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.5,
      "epss": 0.02032,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-21681",
      "url": "https://patchblox.com/security/cve/CVE-2023-21681",
      "title": "Microsoft WDAC OLE DB provider for SQL Server Remote Code Execution Vulnerability",
      "component": "Microsoft WDAC OLE DB provider for SQL",
      "impact": "Remote Code Execution",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.01413,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-21732",
      "url": "https://patchblox.com/security/cve/CVE-2023-21732",
      "title": "Microsoft ODBC Driver Remote Code Execution Vulnerability",
      "component": "Windows ODBC Driver",
      "impact": "Remote Code Execution",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.01413,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-21675",
      "url": "https://patchblox.com/security/cve/CVE-2023-21675",
      "title": "Windows Kernel Elevation of Privilege Vulnerability",
      "component": "Windows Virtual Registry Provider",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00849,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-21747",
      "url": "https://patchblox.com/security/cve/CVE-2023-21747",
      "title": "Windows Kernel Elevation of Privilege Vulnerability",
      "component": "Windows Virtual Registry Provider",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00849,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-21748",
      "url": "https://patchblox.com/security/cve/CVE-2023-21748",
      "title": "Windows Kernel Elevation of Privilege Vulnerability",
      "component": "Windows Virtual Registry Provider",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00849,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-21749",
      "url": "https://patchblox.com/security/cve/CVE-2023-21749",
      "title": "Windows Kernel Elevation of Privilege Vulnerability",
      "component": "Windows Virtual Registry Provider",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00828,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-21772",
      "url": "https://patchblox.com/security/cve/CVE-2023-21772",
      "title": "Windows Kernel Elevation of Privilege Vulnerability",
      "component": "Windows Virtual Registry Provider",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00739,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-21774",
      "url": "https://patchblox.com/security/cve/CVE-2023-21774",
      "title": "Windows Kernel Elevation of Privilege Vulnerability",
      "component": "Windows Virtual Registry Provider",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00739,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-21750",
      "url": "https://patchblox.com/security/cve/CVE-2023-21750",
      "title": "Windows Kernel Elevation of Privilege Vulnerability",
      "component": "Windows Virtual Registry Provider",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.1,
      "epss": 0.00731,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-21773",
      "url": "https://patchblox.com/security/cve/CVE-2023-21773",
      "title": "Windows Kernel Elevation of Privilege Vulnerability",
      "component": "Windows Virtual Registry Provider",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00721,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-21678",
      "url": "https://patchblox.com/security/cve/CVE-2023-21678",
      "title": "Windows Print Spooler Elevation of Privilege Vulnerability",
      "component": "Windows Print Spooler Components",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00596,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-21760",
      "url": "https://patchblox.com/security/cve/CVE-2023-21760",
      "title": "Windows Print Spooler Elevation of Privilege Vulnerability",
      "component": "Windows Print Spooler Components",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.1,
      "epss": 0.00549,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-21537",
      "url": "https://patchblox.com/security/cve/CVE-2023-21537",
      "title": "Microsoft Message Queuing (MSMQ) Elevation of Privilege Vulnerability",
      "component": "Windows Message Queuing",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00542,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-21680",
      "url": "https://patchblox.com/security/cve/CVE-2023-21680",
      "title": "Windows Win32k Elevation of Privilege Vulnerability",
      "component": "Microsoft Graphics Component",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.0049,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-21765",
      "url": "https://patchblox.com/security/cve/CVE-2023-21765",
      "title": "Windows Print Spooler Elevation of Privilege Vulnerability",
      "component": "Windows Print Spooler Components",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00478,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-21754",
      "url": "https://patchblox.com/security/cve/CVE-2023-21754",
      "title": "Windows Kernel Elevation of Privilege Vulnerability",
      "component": "Windows Management Instrumentation",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00471,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-21542",
      "url": "https://patchblox.com/security/cve/CVE-2023-21542",
      "title": "Windows Installer Elevation of Privilege Vulnerability",
      "component": "Windows Installer",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7,
      "epss": 0.00283,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-21525",
      "url": "https://patchblox.com/security/cve/CVE-2023-21525",
      "title": "Remote Procedure Call Runtime Denial of Service Vulnerability",
      "component": "Windows RPC API",
      "impact": "Denial of Service",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 5.3,
      "epss": 0.01549,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-21563",
      "url": "https://patchblox.com/security/cve/CVE-2023-21563",
      "title": "BitLocker Security Feature Bypass Vulnerability",
      "component": "Windows BitLocker",
      "impact": "Security Feature Bypass",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 6.8,
      "epss": 0.01496,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-21682",
      "url": "https://patchblox.com/security/cve/CVE-2023-21682",
      "title": "Windows Point-to-Point Protocol (PPP) Information Disclosure Vulnerability",
      "component": "Windows Point-to-Point Tunneling Protocol",
      "impact": "Information Disclosure",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 5.3,
      "epss": 0.01412,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-21560",
      "url": "https://patchblox.com/security/cve/CVE-2023-21560",
      "title": "Windows Boot Manager Security Feature Bypass Vulnerability",
      "component": "Windows Boot Manager",
      "impact": "Security Feature Bypass",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 6.6,
      "epss": 0.01167,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-21776",
      "url": "https://patchblox.com/security/cve/CVE-2023-21776",
      "title": "Windows Kernel Information Disclosure Vulnerability",
      "component": "Windows Virtual Registry Provider",
      "impact": "Information Disclosure",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 5.5,
      "epss": 0.0104,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-07T12:40:37Z"
}