Microsoft security briefs
3324 published alerts for Microsoft products and services.
Windows Remote Access Service Infrastructure Elevation of Privilege vulnerability
Windows Remote Access Service Infrastructure Elevation of Privilege vulnerability (CVE-2026-56647) was added to Microsoft’s security update guidance. Integer overflow or wraparound in Windows Remote Access Service Infrastructure allows an authorized attacker to elevate privileges over a network. If you need help checking exposure, call (864) 335-9223.
Windows Admin Center (WAC) Remote Code Execution vulnerability
Windows Admin Center (WAC) Remote Code Execution vulnerability (CVE-2026-56196) was added to Microsoft’s security update guidance. Relative path traversal in Windows Admin Center allows an authorized attacker to execute code over a network. If you need help checking exposure, call (864) 335-9223.
Microsoft Office Information Disclosure vulnerability
Microsoft Office Information Disclosure vulnerability (CVE-2026-56195) 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.
Windows NFS Server Elevation of Privilege vulnerability
Windows NFS Server Elevation of Privilege vulnerability (CVE-2026-56194) was added to Microsoft’s security update guidance. Heap-based buffer overflow in Windows Network File System 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-2026-56193) 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 Office Information Disclosure vulnerability
Microsoft Office Information Disclosure vulnerability (CVE-2026-56192) 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 Windows Media Foundation Remote Code Execution vulnerability
Microsoft Windows Media Foundation Remote Code Execution vulnerability (CVE-2026-56189) was added to Microsoft’s security update guidance. Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code locally. If you need help checking exposure, call (864) 335-9223.
Windows MIDI Service Module Elevation of Privileges vulnerability
Windows MIDI Service Module Elevation of Privileges vulnerability (CVE-2026-56187) was added to Microsoft’s security update guidance. Use after free in Windows MIDI Service Module allows an authorized attacker to elevate privileges locally. If you need help checking exposure, call (864) 335-9223.
Windows Secure Channel Information Disclosure vulnerability
Windows Secure Channel Information Disclosure vulnerability (CVE-2026-56186) was added to Microsoft’s security update guidance. Out-of-bounds read in Windows Schannel allows an authorized attacker to disclose information over a network. If you need help checking exposure, call (864) 335-9223.
Windows Admin Center Information Disclosure vulnerability
Windows Admin Center Information Disclosure vulnerability (CVE-2026-56185) was added to Microsoft’s security update guidance. Improper authentication in Windows Admin Center allows an authorized attacker to disclose information over a network. If you need help checking exposure, call (864) 335-9223.
Windows MIDI Service Module Elevation of Privileges vulnerability
Windows MIDI Service Module Elevation of Privileges vulnerability (CVE-2026-56183) was added to Microsoft’s security update guidance. Use after free in Windows MIDI Service Module allows an authorized attacker to elevate privileges locally. If you need help checking exposure, call (864) 335-9223.
Windows Network Address Translation (NAT) Spoofing vulnerability
Windows Network Address Translation (NAT) Spoofing vulnerability (CVE-2026-56181) was added to Microsoft’s security update guidance. Origin validation error in Windows Network Address Translation (NAT) allows an unauthorized attacker to perform spoofing over an adjacent network. 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-2026-56178) was added to Microsoft’s security update guidance. Time-of-check time-of-use (toctou) race condition in Microsoft Defender for Endpoint allows an authorized attacker to elevate privileges locally. If you need help checking exposure, call (864) 335-9223.
Windows NTFS Elevation of Privilege vulnerability
Windows NTFS Elevation of Privilege vulnerability (CVE-2026-56175) was added to Microsoft’s security update guidance. Heap-based buffer overflow in Windows NTFS allows an authorized attacker to elevate privileges locally. If you need help checking exposure, call (864) 335-9223.
Windows WebView Elevation of Privilege vulnerability
Windows WebView Elevation of Privilege vulnerability (CVE-2026-56173) was added to Microsoft’s security update guidance. Use after free in Windows WebView allows an authorized attacker to elevate privileges locally. If you need help checking exposure, call (864) 335-9223.
Windows Admin Center Elevation of Privilege vulnerability
Windows Admin Center Elevation of Privilege vulnerability (CVE-2026-56169) was added to Microsoft’s security update guidance. Improper authentication in Windows Admin Center allows an authorized attacker to elevate privileges over a network. If you need help checking exposure, call (864) 335-9223.
Windows SMB Server Denial of Service vulnerability
Windows SMB Server Denial of Service vulnerability (CVE-2026-56168) was added to Microsoft’s security update guidance. Information published. If you need help checking exposure, call (864) 335-9223.
Microsoft SharePoint Server Elevation of Privilege vulnerability
Microsoft SharePoint Server Elevation of Privilege vulnerability (CVE-2026-56164) was added to Microsoft’s security update guidance. Missing authentication for critical function in Microsoft Office SharePoint allows an unauthorized attacker to elevate privileges over a network. If you need help checking exposure, call (864) 335-9223.
Microsoft SharePoint Server Spoofing vulnerability
Microsoft SharePoint Server Spoofing vulnerability (CVE-2026-56157) was added to Microsoft’s security update guidance. Improper access control in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network. If you need help checking exposure, call (864) 335-9223.
Microsoft Excel Remote Code Execution vulnerability
Microsoft Excel Remote Code Execution vulnerability (CVE-2026-56156) 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.
Microsoft Active Directory Federation Services Insufficient Granularity of Access Control Vulnerability
Microsoft Active Directory Federation Services is listed in CISA's Known Exploited Vulnerabilities catalog (CVE-2026-56155). Microsoft Active Directory Federation Services contains an insufficient granularity of access control vulnerability that allows an authorized attacker to elevate privileges locally. CISA remediation due date: 2026-07-28. If you need help checking exposure, call (864) 335-9223.
Microsoft Excel Remote Code Execution vulnerability
Microsoft Excel Remote Code Execution vulnerability (CVE-2026-55949) was added to Microsoft’s security update guidance. Use of uninitialized resource in Microsoft Office Excel allows an unauthorized attacker to execute code locally. If you need help checking exposure, call (864) 335-9223.
Microsoft Excel Remote Code Execution vulnerability
Microsoft Excel Remote Code Execution vulnerability (CVE-2026-55948) was added to Microsoft’s security update guidance. Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally. If you need help checking exposure, call (864) 335-9223.
Microsoft Excel Remote Code Execution vulnerability
Microsoft Excel Remote Code Execution vulnerability (CVE-2026-55947) 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.