Microsoft · Security update · March 10, 2026

KB5078938: March 2026 cumulative update for Windows 10 1607

KB5078938, released March 10, 2026, fixes 35 CVEs across 4 products. None of them is reported as exploited. Patch Radar priority: Urgent.

Urgent
CVEs closed
35
None rated Critical
Exploited
0
None reported
Exploitation more likely
5
Vendor assessment
Highest EPSS
0.0516
92nd percentile

Priority of the 35 CVEs

Patch now 0 Urgent 5 High 23 Routine 7

Applies to

ProductBuild after install
Windows 10 Version 1607 for 32-bit Systems14393.8957
Windows 10 Version 1607 for x64-based Systems14393.8957
Windows Server 201614393.8957
Windows Server 2016 (Server Core installation)14393.8957

CVEs this fix closes

PriorityCVEComponentImpactCVSSEPSSExploitation
Urgent CVE-2026-24294 Windows SMB Server Elevation of Privilege 7.8 0.0516 More likely
Urgent CVE-2026-24289 Windows Kernel Elevation of Privilege 7.8 0.0488 More likely
Urgent CVE-2026-23668 Microsoft Graphics Component Elevation of Privilege 7.0 0.0387 More likely
Urgent CVE-2026-25187 Winlogon Elevation of Privilege 7.8 0.0341 More likely
Urgent CVE-2026-24291 Windows Accessibility Infrastructure (ATBroker.exe) Elevation of Privilege 7.8 0.0334 More likely
High CVE-2026-25181 Windows GDI+ Information Disclosure 7.5 0.0157 Exploitation Less Likely
High CVE-2026-23674 Windows MapUrlToZone Security Feature Bypass 7.5 0.0139 Exploitation Unlikely
High CVE-2026-25177 Active Directory Domain Services Elevation of Privilege 8.8 0.0135 Exploitation Less Likely
High CVE-2026-23669 RPC Runtime Remote Code Execution 8.8 0.0104 Exploitation Less Likely
High CVE-2026-25172 Windows Routing and Remote Access Service (RRAS) Remote Code Execution 8.0 0.0100 Exploitation Less Likely
High CVE-2026-25173 Windows Routing and Remote Access Service (RRAS) Remote Code Execution 8.0 0.0100 Exploitation Less Likely
High CVE-2026-26111 Windows Routing and Remote Access Service (RRAS) Remote Code Execution 8.0 0.0090 Exploitation Less Likely
High CVE-2026-26128 Windows SMB Server Elevation of Privilege 7.8 0.0069 Exploitation Less Likely
High CVE-2026-25188 Windows Telephony Service Elevation of Privilege 8.8 0.0058 Exploitation Unlikely
High CVE-2026-25190 Windows GDI Remote Code Execution 7.8 0.0056 Exploitation Less Likely
High CVE-2026-24285 Windows Win32K Elevation of Privilege 7.0 0.0046 Exploitation Less Likely
High CVE-2026-23673 Windows Resilient File System (ReFS) Elevation of Privilege 7.8 0.0043 Exploitation Unlikely
High CVE-2026-25165 Windows Performance Counters Elevation of Privilege 7.8 0.0043 Exploitation Unlikely
High CVE-2026-25176 Windows Ancillary Function Driver for WinSock Elevation of Privilege 7.8 0.0042 Exploitation Less Likely
High CVE-2026-25174 Windows Extensible File Allocation Elevation of Privilege 7.8 0.0039 Exploitation Unlikely
High CVE-2026-25175 Windows NTFS Elevation of Privilege 7.8 0.0039 Exploitation Less Likely
High CVE-2026-23672 Windows Universal Disk Format File System Driver (UDFS) Elevation of Privilege 7.8 0.0038 Exploitation Unlikely
High CVE-2026-25179 Windows Ancillary Function Driver for WinSock Elevation of Privilege 7.0 0.0037 Exploitation Less Likely
High CVE-2026-25171 Windows Authentication Methods Elevation of Privilege 7.0 0.0031 Exploitation Less Likely
High CVE-2026-25178 Windows Ancillary Function Driver for WinSock Elevation of Privilege 7.0 0.0031 Exploitation Less Likely
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