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KB5099445

Security update fixing 173 CVEs

Support article Update Catalog CVEs in Security CVE list for a ticket
0Windows versions
173CVEs fixed · 19 critical
1Exploited or in CISA KEV
0Open known issues affecting it
YesRestart required (per MSRC)

Known issues in this update

Windows release health

No known issues listed

Windows release health lists no issues from this KB or the update it builds on.

Issues this update resolves

No resolved issues listed

Windows release health names no issues fixed by this KB.

Security fixes

173 Microsoft CVEs · most urgent first
CVE Vulnerability Severity CVSSEPSSImpact Status
CVE-2026-56155 Active Directory Federation Services Elevation of Privilege VulnerabilityActive Directory Federation Services (AD FS) Important 7.80.3%Elevation of Privilege ExploitedCISA KEV · due 28 Jul
CVE-2026-57092 Microsoft Windows VMSwitch Elevation of Privilege VulnerabilityWindows VMSwitch Critical 9.90.9%Elevation of Privilege
CVE-2026-50518 Windows DHCP Server Remote Code Execution VulnerabilityWindows DHCP Server Critical 9.81.0%Remote Code Execution
CVE-2026-56159 DHCP Server Service Remote Code Execution VulnerabilityWindows DHCP Server Critical 9.81.0%Remote Code Execution Revised 27 Jul
CVE-2026-56188 Windows Server Network driver Remote Code Execution VulnerabilityWindows Server Network driver Critical 9.80.6%Remote Code Execution Revised 17 Aug
CVE-2026-50380 Windows GDI+ Remote Code Execution VulnerabilityWindows GDI+ Critical 9.60.8%Remote Code Execution
CVE-2026-50370 DHCP Server Service Remote Code Execution VulnerabilityWindows DHCP Server Critical 8.80.5%Remote Code Execution
CVE-2026-50444 Windows Server Update Service (WSUS) Elevation of Privilege VulnerabilityWindows Server Update Service Critical 8.80.8%Elevation of Privilege
CVE-2026-50474 Remote Desktop Client Remote Code Execution VulnerabilityRemote Desktop Client Critical 8.80.8%Remote Code Execution
CVE-2026-54121 Active Directory Certificate Services Elevation of Privilege VulnerabilityActive Directory Certificate Services (AD CS) Critical 8.80.8%Elevation of Privilege
CVE-2026-54982 Windows Reliable Multicast Transport Driver (RMCAST) Remote Code Execution VulnerabilityReliable Multicast Transport Driver (RMCAST) Critical 8.80.5%Remote Code Execution
CVE-2026-54999 Windows TCP/IP Remote Code Execution VulnerabilityWindows TCP/IP Critical 8.80.4%Remote Code Execution
CVE-2026-58608 Windows Print Spooler Remote Code Execution VulnerabilityWindows Print Spooler Components Critical 8.80.6%Remote Code Execution
CVE-2026-54128 Windows DHCP Client Remote Code Execution VulnerabilityWindows DHCP Client Critical 8.40.4%Remote Code Execution Revised 30 Jul
CVE-2026-54992 Microsoft Message Queuing Queue Manager Remote Code Execution VulnerabilityWindows Message Queuing Queue Manager Critical 8.40.3%Remote Code Execution
CVE-2026-49164 Windows Active Directory Domain Services Remote Code Execution VulnerabilityActive Directory Domain Services Critical 8.10.8%Remote Code Execution
CVE-2026-50694 Windows Secure Socket Tunneling Protocol (SSTP) Remote Code Execution VulnerabilityWindows Secure Socket Tunneling Protocol (SSTP) Critical 8.10.8%Remote Code Execution
CVE-2026-54995 Windows Reliable Multicast Transport Driver (RMCAST) Remote Code Execution VulnerabilityReliable Multicast Transport Driver (RMCAST) Critical 8.10.8%Remote Code Execution
CVE-2026-49796 Windows GDI+ Remote Code Execution VulnerabilityWindows GDI+ Critical 7.80.5%Remote Code Execution
CVE-2026-56189 Microsoft Windows Media Foundation Remote Code Execution VulnerabilityMicrosoft Windows Media Foundation Critical 7.80.4%Remote Code Execution
CVE-2026-50447 Windows Message Queuing Service (MSMQ) Remote Code Execution VulnerabilityWindows Message Queuing Important 9.81.0%Remote Code Execution
CVE-2026-56190 Remote Desktop Protocol Remote Code Execution VulnerabilityWindows RDP Important 9.81.0%Remote Code Execution
CVE-2026-49798 Windows Kernel Elevation of Privilege VulnerabilityWindows Kernel Important 9.30.4%Elevation of Privilege Revised 20 Aug
CVE-2026-49178 Windows Active Directory Domain Services Remote Code Execution VulnerabilityActive Directory Domain Services Important 8.80.9%Remote Code Execution
CVE-2026-50369 Windows Remote Desktop Services Elevation of Privilege VulnerabilityWindows Remote Desktop Services Important 8.80.7%Elevation of Privilege
CVE-2026-50477 Windows Kernel Elevation of Privilege VulnerabilityWindows Kernel Important 8.80.3%Elevation of Privilege
CVE-2026-50489 Win32k Elevation of Privilege VulnerabilityWindows Win32K Important 8.80.3%Elevation of Privilege
CVE-2026-54107 Windows Win32k Elevation of Privilege VulnerabilityWindows Win32K Important 8.80.2%Elevation of Privilege
CVE-2026-56194 Windows NFS Server Elevation of Privilege VulnerabilityWindows Network File System Important 8.80.9%Elevation of Privilege
CVE-2026-58594 Remote Desktop Client Remote Code Execution VulnerabilityWindows RDP Important 8.80.8%Remote Code Execution
CVE-2026-49184 Windows NTFS Remote Code Execution VulnerabilityWindows NTFS Important 8.40.3%Remote Code Execution
CVE-2026-54122 Windows GDI+ Remote Code Execution VulnerabilityWindows GDI+ Important 8.40.4%Remote Code Execution
CVE-2026-50439 Microsoft Message Queuing Queue Manager Remote Code Execution VulnerabilityWindows Message Queuing Queue Manager Important 8.10.8%Remote Code Execution
CVE-2026-56186 Windows Secure Channel Information Disclosure VulnerabilityWindows Schannel Important 8.11.1%Information Disclosure
CVE-2026-40400 Windows PowerShell Remote Code Execution VulnerabilityWindows PowerShell Important 8.00.9%Remote Code Execution Revised 21 Sep
CVE-2026-42975 Windows Bluetooth Port Driver Remote Code ExecutionWindows Bluetooth Port Driver Important 8.00.5%Remote Code Execution
CVE-2026-50365 Remote Access Management service/API (RPC server) Elevation of Privilege VulnerabilityWindows RPC API Important 8.00.5%Elevation of Privilege
CVE-2026-50502 Windows Event Logging Service Remote Code Execution VulnerabilityWindows Event Logging Service Important 8.00.7%Remote Code Execution
CVE-2026-50683 Windows DHCP Client Elevation of Privilege VulnerabilityWindows DHCP Server Important 8.00.6%Elevation of Privilege Revised 15 Sep
CVE-2026-49797 Windows NTFS Remote Code Execution VulnerabilityWindows NTFS Important 7.80.5%Remote Code Execution
CVE-2026-50306 Windows TCP/IP Elevation of Privilege VulnerabilityWindows TCP/IP Important 7.80.3%Elevation of Privilege
CVE-2026-50308 Windows NTFS Remote Code Execution VulnerabilityWindows NTFS Important 7.80.5%Remote Code Execution
CVE-2026-50309 Windows NTFS Remote Code Execution VulnerabilityWindows NTFS Important 7.80.3%Remote Code Execution Revised 13 Aug
CVE-2026-50311 Windows Server Elevation of Privilege VulnerabilityWindows Server Important 7.80.3%Elevation of Privilege Revised 17 Sep
CVE-2026-50313 Windows NTFS Remote Code Execution VulnerabilityWindows NTFS Important 7.80.5%Remote Code Execution Revised 14 Aug
CVE-2026-50321 Windows USB Driver Elevation of Privilege VulnerabilityWindows USB Driver Important 7.80.2%Elevation of Privilege
CVE-2026-50332 Windows Kernel Elevation of Privilege VulnerabilityWindows Kernel Important 7.80.3%Elevation of Privilege
CVE-2026-50344 Windows OLE Elevation of Privilege VulnerabilityWindows OLE Important 7.80.3%Elevation of Privilege Revised 31 Aug
CVE-2026-50346 Netlogon RPC Elevation of Privilege VulnerabilityRPC Runtime Important 7.80.3%Elevation of Privilege
CVE-2026-50347 Windows Data.dll Remote Code Execution VulnerabilityWindows Data.dll Important 7.80.5%Remote Code Execution
Showing 50 of 173All CVEs
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