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16,884 advisories
Each date says whether the vendor published or updated the bulletin. A vendor bulletin describes products that may be affected. It does not prove that the vulnerable product or version is installed in your environment.
Microsoft Security Response CenterCVE-2026-70285
HighCVSS 7.8
Windows Win32k Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.
Affected productsWindows 11 Version 26H2 for ARM64-based Systems, Windows 11 Version 26H2 for x64-based Systems, Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems
Fixed versions10.0.26300.9711, 10.0.17763.9376, 10.0.20348.5761, 10.0.19044.7807
Vendor guidance
Install KB5127648. Install KB5126651. Install KB5126655. Install KB5126657. Install KB5126646. Install KB5126653. Install KB5127646. Install KB5126868.
Microsoft Security Response CenterCVE-2026-70284
HighCVSS 5.5
Win32k Information Disclosure Vulnerability
Use of uninitialized resource in Windows Win32 Kernel Subsystem allows an authorized attacker to disclose information locally.
Affected productsWindows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019, Windows Server 2019 (Server Core installation)
Fixed versions10.0.17763.9376, 10.0.20348.5761, 10.0.19044.7807, 10.0.19045.7807
Vendor guidance
Install KB5126651. Install KB5126655. Install KB5126657. Install KB5126646. Install KB5127648. Install KB5126653. Install KB5127646. Install KB5126868. Install KB5126835. Install KB5126836.
Microsoft Security Response CenterCVE-2026-70282
HighCVSS 8.8
Microsoft Office Outlook Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.
Affected productsMicrosoft Office LTSC 2021 for 64-bit editions, Microsoft Office LTSC 2021 for 32-bit editions, Microsoft Office LTSC 2024 for 64-bit editions, Microsoft Office LTSC 2024 for 32-bit editions
Fixed versions16.0.14334.20974, 16.0.17932.21056, https://aka.ms/OfficeSecurityReleases
Vendor guidance
Release Notes
Microsoft Security Response CenterCVE-2026-70280
HighCVSS 4.4
Windows Hello Security Feature Bypass Vulnerability
Incorrect authorization in Windows Hello allows an authorized attacker to bypass a security feature locally.
Affected productsWindows 10 Version 21H2 for 32-bit Systems, Windows 10 Version 21H2 for ARM64-based Systems, Windows 10 Version 21H2 for x64-based Systems, Windows 10 Version 22H2 for x64-based Systems
Fixed versions10.0.19044.7807, 10.0.19045.7807, 10.0.26200.9711, 10.0.22631.7652
Vendor guidance
Install KB5126657. Install KB5127648. Install KB5126653. Install KB5127646.
Microsoft Security Response CenterCVE-2026-70279
HighCVSS 9.3
Microsoft Exchange Server Spoofing Vulnerability
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.
Affected productsMicrosoft Exchange Server 2019 Cumulative Update 15, Microsoft Exchange Server 2019 Cumulative Update 14, Microsoft Exchange Server 2016 Cumulative Update 23, Microsoft Exchange Server Subscription Edition RTM
Fixed versions15.02.1748.055, 15.02.1544.050, 15.01.2507.077, 15.02.2562.056
Vendor guidance
Install KB5128896. Install KB5128897. Install KB5128898. Install KB5128895.
Microsoft Security Response CenterCVE-2026-70278
HighCVSS 7.8
Microsoft Windows Media Foundation Elevation of Privilege Vulnerability
Heap-based buffer overflow in Microsoft Windows Media Foundation allows an authorized attacker to elevate privileges locally.
Affected productsWindows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019, Windows Server 2019 (Server Core installation)
Fixed versions10.0.17763.9376, 10.0.20348.5761, 10.0.19044.7807, 10.0.19045.7807
Vendor guidance
Install KB5126651. Install KB5126655. Install KB5126657. Install KB5126646. Install KB5127648. Install KB5126653. Install KB5127646. Install KB5126868. Install KB5126835. Install KB5126836.
Microsoft Security Response CenterCVE-2026-70276
HighCVSS 7.0
Microsoft Office Click-To-Run Elevation of Privilege Vulnerability
Use after free in Microsoft Office Click-To-Run allows an authorized attacker to elevate privileges locally.
Affected productsMicrosoft Office LTSC 2021 for 64-bit editions, Microsoft Office LTSC 2021 for 32-bit editions, Microsoft Office LTSC 2024 for 64-bit editions, Microsoft Office LTSC 2024 for 32-bit editions
Fixed versions16.0.14334.20974, 16.0.17932.21056, https://aka.ms/OfficeSecurityReleases
Vendor guidance
Release Notes
Microsoft Security Response CenterCVE-2026-70274
HighCVSS 7.8
Windows Bind Filter Driver Elevation of Privilege Vulnerability
Use after free in Windows Bind Filter Driver allows an authorized attacker to elevate privileges locally.
Affected productsWindows Server 2025 (Server Core installation), Windows 11 Version 25H2 for ARM64-based Systems, Windows 11 Version 25H2 for x64-based Systems, Windows 11 Version 23H2 for ARM64-based Systems
Fixed versions10.0.26100.33650, 10.0.26200.9711, 10.0.22631.7652, 10.0.26100.9711
Vendor guidance
Install KB5126646. Install KB5127648. Install KB5126653. Install KB5127646.
Microsoft Security Response CenterCVE-2026-70273
HighCVSS 7.0
Windows Win32k Elevation of Privilege Vulnerability
Use after free in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.
Affected productsWindows Server 2025 (Server Core installation), Windows 11 Version 25H2 for ARM64-based Systems, Windows 11 Version 25H2 for x64-based Systems, Windows 11 Version 24H2 for ARM64-based Systems
Fixed versions10.0.26100.33650, 10.0.26200.9711, 10.0.26100.9711, 10.0.28000.3231
Vendor guidance
Install KB5126646. Install KB5127648. Install KB5127646.
Microsoft Security Response CenterCVE-2026-70272
HighCVSS 7.0
Windows Installer Elevation of Privilege Vulnerability
Use after free in Windows Installer allows an authorized attacker to elevate privileges locally.
Affected productsWindows 11 Version 26H2 for ARM64-based Systems, Windows 11 Version 26H2 for x64-based Systems, Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems
Fixed versions10.0.26300.9711, 10.0.17763.9376, 10.0.20348.5761, 10.0.19044.7807
Vendor guidance
Install KB5127648. Install KB5126651. Install KB5126655. Install KB5126657. Install KB5126646. Install KB5126653. Install KB5127646. Install KB5126868. Install KB5126835. Install KB5126836.
Microsoft Security Response CenterCVE-2026-70271
HighCVSS 7.0
Windows Win32k Elevation of Privilege Vulnerability
Use after free in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.
Affected productsWindows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019, Windows Server 2019 (Server Core installation)
Fixed versions10.0.17763.9376, 10.0.20348.5761, 10.0.19044.7807, 10.0.19045.7807
Vendor guidance
Release Notes Install KB5126651. Install KB5126655. Install KB5126657. Install KB5126646. Install KB5127648. Install KB5126653. Install KB5127646. Install KB5126868. Install KB5126835. Install KB5126836.
Microsoft Security Response CenterCVE-2026-70270
HighCVSS 5.5
Windows Container Isolation FS Filter Driver Elevation of Privilege Vulnerability
Untrusted pointer dereference in Windows Container Isolation FS Filter Driver allows an authorized attacker to elevate privileges locally.
Affected productsWindows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019, Windows Server 2019 (Server Core installation)
Fixed versions10.0.17763.9376, 10.0.20348.5761, 10.0.19044.7807, 10.0.19045.7807
Vendor guidance
Install KB5126651. Install KB5126655. Install KB5126657. Install KB5126646. Install KB5127648. Install KB5126653. Install KB5127646. Install KB5126868.
Microsoft Security Response CenterCVE-2026-70267
HighCVSS 7.2
Microsoft Office SharePoint Remote Code Execution Vulnerability
Inclusion of functionality from untrusted control sphere in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
Affected productsMicrosoft SharePoint Server Subscription Edition
Fixed versions16.0.20326.20190
Vendor guidance
Install KB5002927.
Microsoft Security Response CenterCVE-2026-70266
HighCVSS 8.8
Microsoft Office SharePoint Elevation of Privilege Vulnerability
Improper neutralization of special elements used in an sql command ('sql injection') in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.
Affected productsMicrosoft SharePoint Server Subscription Edition
Fixed versions16.0.20326.20190
Vendor guidance
Install KB5002927.
Microsoft Security Response CenterCVE-2026-70264
HighCVSS 5.5
Microsoft Defender Information Disclosure Vulnerability
Improper link resolution before file access ('link following') in Microsoft Defender allows an authorized attacker to disclose information locally.
Affected productsWindows Defender
Fixed versions1.1.26090.9
Vendor guidance
Release Notes
Microsoft Security Response CenterCVE-2026-70262
HighCVSS 8.8
WebDAV Elevation of Privilege Vulnerability
Heap-based buffer overflow in WebDAV allows an unauthorized attacker to elevate privileges over a network.
Affected productsWindows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019, Windows Server 2019 (Server Core installation)
Fixed versions10.0.17763.9376, 10.0.20348.5761, 10.0.19044.7807, 10.0.19045.7807
Vendor guidance
Install KB5126651. Install KB5126655. Install KB5126657. Install KB5126646. Install KB5127648. Install KB5126653. Install KB5127646. Install KB5126868. Install KB5126835. Install KB5126836.
Microsoft Security Response CenterCVE-2026-70261
HighCVSS 5.5
Microsoft Trace Data Helper Information Disclosure Vulnerability
Exposure of sensitive system information to an unauthorized control sphere in Microsoft Trace Data Helper allows an authorized attacker to disclose information locally.
Affected productsWindows Server 2012, Windows Server 2012 (Server Core installation), Windows Server 2012 R2, Windows Server 2012 R2 (Server Core installation)
Fixed versions6.2.9200.26434, 6.3.9600.23470, 10.0.14393.9612, 10.0.17763.9376
Vendor guidance
Install KB5126835. Install KB5126836. Install KB5126868. Install KB5126651. Install KB5126657. Install KB5126655. Install KB5126653. Install KB5127648. Install KB5126646. Install KB5127646.
Microsoft Security Response CenterCVE-2026-70260
HighCVSS 5.5
Microsoft Trace Data Helper Information Disclosure Vulnerability
Exposure of sensitive system information to an unauthorized control sphere in Microsoft Trace Data Helper allows an authorized attacker to disclose information locally.
Affected productsWindows Server 2012, Windows Server 2012 (Server Core installation), Windows Server 2012 R2, Windows Server 2012 R2 (Server Core installation)
Fixed versions6.2.9200.26434, 6.3.9600.23470, 10.0.14393.9612, 10.0.17763.9376
Vendor guidance
Install KB5126835. Install KB5126836. Install KB5126868. Install KB5126651. Install KB5126657. Install KB5126655. Install KB5126653. Install KB5127648. Install KB5126646. Install KB5127646.
Microsoft Security Response CenterCVE-2026-70259
HighCVSS 6.5
Microsoft Office SharePoint Information Disclosure Vulnerability
Server-side request forgery (ssrf) in Microsoft Office SharePoint allows an authorized attacker to disclose information over a network.
Affected productsMicrosoft SharePoint Server Subscription Edition
Fixed versions16.0.20326.20190
Vendor guidance
Install KB5002927.
Microsoft Security Response CenterCVE-2026-70258
HighCVSS 8.8
Microsoft Windows Media Foundation Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code over a network.
Affected productsWindows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019, Windows Server 2019 (Server Core installation)
Fixed versions10.0.17763.9376, 10.0.20348.5761, 10.0.19044.7807, 10.0.19045.7807
Vendor guidance
Install KB5126651. Install KB5126655. Install KB5126657. Install KB5126646. Install KB5127648. Install KB5126653. Install KB5127646. Install KB5126868. Install KB5126835. Install KB5126836.
Microsoft Security Response CenterCVE-2026-70257
HighCVSS 8.8
Microsoft Office Outlook Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.
Affected productsMicrosoft Office LTSC 2021 for 64-bit editions, Microsoft Office LTSC 2021 for 32-bit editions, Microsoft Office LTSC 2024 for 64-bit editions, Microsoft Office LTSC 2024 for 32-bit editions
Fixed versions16.0.14334.20974, 16.0.17932.21056, https://aka.ms/OfficeSecurityReleases
Vendor guidance
Release Notes
Microsoft Security Response CenterCVE-2026-70256
HighCVSS 8.8
Microsoft Office Outlook Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.
Affected productsMicrosoft Office LTSC 2024 for 64-bit editions, Microsoft Office LTSC 2024 for 32-bit editions, Microsoft 365 Apps for Enterprise for 64-bit Systems, Microsoft 365 Apps for Enterprise for 32-bit Systems
Fixed versions16.0.17932.21056, https://aka.ms/OfficeSecurityReleases
Vendor guidance
Release Notes
Microsoft Security Response CenterCVE-2026-70255
HighCVSS 7.8
Desktop Window Manager Elevation of Privilege Vulnerability
Heap-based buffer overflow in Desktop Window Manager allows an authorized attacker to elevate privileges locally.
Affected productsWindows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019, Windows Server 2019 (Server Core installation)
Fixed versions10.0.17763.9376, 10.0.20348.5761, 10.0.19044.7807, 10.0.19045.7807
Vendor guidance
Install KB5126651. Install KB5126655. Install KB5126657. Install KB5126646. Install KB5127648. Install KB5126653. Install KB5127646.
Microsoft Security Response CenterCVE-2026-70253
HighCVSS 7.0
Windows Win32k Elevation of Privilege Vulnerability
Use after free in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.
Affected productsWindows 11 Version 26H2 for ARM64-based Systems, Windows 11 Version 26H2 for x64-based Systems, Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems
Fixed versions10.0.26300.9711, 10.0.17763.9376, 10.0.20348.5761, 10.0.19044.7807
Vendor guidance
Install KB5127648. Install KB5126651. Install KB5126655. Install KB5126657. Install KB5126646. Install KB5126653. Install KB5127646. Install KB5126868.
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Start with the vendor's bulletin.
We normalize the fields that vendors publish so you can search and compare advisories in one place. We do not replace the original bulletin or turn a product-name match into proof that a system is vulnerable.
Confirm the installed product and version, read the linked vendor guidance, and test the recommended update or mitigation through your normal change process.