Microsoft security briefs
3324 published alerts for Microsoft products and services.
Windows Resilient File System (ReFS) Remote Code Execution vulnerability
Windows Resilient File System (ReFS) Remote Code Execution vulnerability (CVE-2026-54109) was added to Microsoft’s security update guidance. Integer overflow or wraparound in Windows Resilient File System (ReFS) allows an authorized attacker to execute code locally. If you need help checking exposure, call (864) 335-9223.
Microsoft SharePoint Server Spoofing vulnerability
Microsoft SharePoint Server Spoofing vulnerability (CVE-2026-54108) was added to Microsoft’s security update guidance. External control of file name or path in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network. If you need help checking exposure, call (864) 335-9223.
Windows Win32k Elevation of Privilege vulnerability
Windows Win32k Elevation of Privilege vulnerability (CVE-2026-54107) was added to Microsoft’s security update guidance. Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Win32K allows an authorized attacker to elevate privileges locally. If you need help checking exposure, call (864) 335-9223.
Windows Active Directory Federation Services Denial of Service vulnerability
Windows Active Directory Federation Services Denial of Service vulnerability (CVE-2026-50695) was added to Microsoft’s security update guidance. Stack-based buffer overflow in Active Directory Federation Services allows an unauthorized attacker to deny service over a network. If you need help checking exposure, call (864) 335-9223.
Windows Secure Socket Tunneling Protocol (SSTP) Remote Code Execution vulnerability
Windows Secure Socket Tunneling Protocol (SSTP) Remote Code Execution vulnerability (CVE-2026-50694) was added to Microsoft’s security update guidance. Use after free in Windows Secure Socket Tunneling Protocol (SSTP) allows an unauthorized attacker to execute code over a network. If you need help checking exposure, call (864) 335-9223.
Windows SMB Information Disclosure vulnerability
Windows SMB Information Disclosure vulnerability (CVE-2026-50690) was added to Microsoft’s security update guidance. Use of uninitialized resource in Windows SMB allows an authorized attacker to disclose information locally. If you need help checking exposure, call (864) 335-9223.
Windows Clipboard Server Elevation of Privilege vulnerability
Windows Clipboard Server Elevation of Privilege vulnerability (CVE-2026-50689) was added to Microsoft’s security update guidance. Use after free in Windows Clipboard Server allows an authorized attacker to elevate privileges locally. If you need help checking exposure, call (864) 335-9223.
Windows OLE Remote Code Execution vulnerability
Windows OLE Remote Code Execution vulnerability (CVE-2026-50686) was added to Microsoft’s security update guidance. Access of resource using incompatible type ('type confusion') in Windows OLE allows an unauthorized attacker to execute code over a network. If you need help checking exposure, call (864) 335-9223.
Windows DHCP Server Remote Code Execution vulnerability
Windows DHCP Server Remote Code Execution vulnerability (CVE-2026-50685) was added to Microsoft’s security update guidance. Double free in Windows DHCP Server allows an authorized attacker to execute code over a network. If you need help checking exposure, call (864) 335-9223.
Windows Secure Channel Information Disclosure vulnerability
Windows Secure Channel Information Disclosure vulnerability (CVE-2026-50681) was added to Microsoft’s security update guidance. Exposure of sensitive information to an unauthorized actor in Windows Cryptographic Services allows an authorized attacker to disclose information locally. If you need help checking exposure, call (864) 335-9223.
Windows Hyper-V Elevation of Privilege vulnerability
Windows Hyper-V Elevation of Privilege vulnerability (CVE-2026-50680) was added to Microsoft’s security update guidance. Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to elevate privileges locally. If you need help checking exposure, call (864) 335-9223.
Microsoft Excel Information Disclosure vulnerability
Microsoft Excel Information Disclosure vulnerability (CVE-2026-50678) was added to Microsoft’s security update guidance. Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to disclose information locally. If you need help checking exposure, call (864) 335-9223.
Windows Media Elevation of Privilege vulnerability
Windows Media Elevation of Privilege vulnerability (CVE-2026-50677) was added to Microsoft’s security update guidance. Use after free in Windows Media allows an authorized attacker to elevate privileges locally. If you need help checking exposure, call (864) 335-9223.
Microsoft Excel Remote Code Execution vulnerability
Microsoft Excel Remote Code Execution vulnerability (CVE-2026-50675) was added to Microsoft’s security update guidance. Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally. If you need help checking exposure, call (864) 335-9223.
Windows USB Print Driver Elevation of Privilege vulnerability
Windows USB Print Driver Elevation of Privilege vulnerability (CVE-2026-50674) was added to Microsoft’s security update guidance. Use after free in Windows USB Print Driver allows an authorized attacker to elevate privileges locally. If you need help checking exposure, call (864) 335-9223.
Windows Kernel Elevation of Privilege vulnerability
Windows Kernel Elevation of Privilege vulnerability (CVE-2026-50673) was added to Microsoft’s security update guidance. Information published. If you need help checking exposure, call (864) 335-9223.
Windows NTFS Elevation of Privilege vulnerability
Windows NTFS Elevation of Privilege vulnerability (CVE-2026-50672) was added to Microsoft’s security update guidance. Use after free in Windows NTFS allows an authorized attacker to elevate privileges locally. If you need help checking exposure, call (864) 335-9223.
Windows Win32k Elevation of Privilege vulnerability
Windows Win32k Elevation of Privilege vulnerability (CVE-2026-50670) was added to Microsoft’s security update guidance. Out-of-bounds read in Windows Kernel allows an authorized attacker to elevate privileges locally. If you need help checking exposure, call (864) 335-9223.
Windows Telephony Server Elevation of Privilege vulnerability
Windows Telephony Server Elevation of Privilege vulnerability (CVE-2026-50669) was added to Microsoft’s security update guidance. Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Telephony Service allows an authorized attacker to elevate privileges locally. If you need help checking exposure, call (864) 335-9223.
Windows Resilient File System (ReFS) Elevation of Privilege vulnerability
Windows Resilient File System (ReFS) Elevation of Privilege vulnerability (CVE-2026-50668) was added to Microsoft’s security update guidance. Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to elevate privileges with a physical attack. If you need help checking exposure, call (864) 335-9223.
Windows Common Log File System Driver Elevation of Privilege vulnerability
Windows Common Log File System Driver Elevation of Privilege vulnerability (CVE-2026-50667) was added to Microsoft’s security update guidance. Concurrent execution using shared resource with improper synchronization ('race condition') in Windows NTFS allows an authorized attacker to elevate privileges locally. If you need help checking exposure, call (864) 335-9223.
Windows Remote Access Elevation of Privilege vulnerability
Windows Remote Access Elevation of Privilege vulnerability (CVE-2026-50666) was added to Microsoft’s security update guidance. Use after free in Windows Remote Access Connection Manager allows an authorized attacker to elevate privileges over a network. If you need help checking exposure, call (864) 335-9223.
Microsoft Office Information Disclosure vulnerability
Microsoft Office Information Disclosure vulnerability (CVE-2026-50665) was added to Microsoft’s security update guidance. Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally. If you need help checking exposure, call (864) 335-9223.
Microsoft Defender for Endpoint for Mac Elevation of Privilege vulnerability
Microsoft Defender for Endpoint for Mac Elevation of Privilege vulnerability (CVE-2026-50658) was added to Microsoft’s security update guidance. Time-of-check time-of-use (toctou) race condition in Microsoft Defender allows an authorized attacker to elevate privileges locally. If you need help checking exposure, call (864) 335-9223.