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18,533 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-2026-65794
HighCVSS 6.5
Windows SMB Client Information Disclosure Vulnerability
Buffer over-read in Windows SMB Client allows an unauthorized attacker to disclose information 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 versions10.0.17763.9121, 10.0.20348.5499, 10.0.20348.5440, 10.0.19044.7663
Vendor guidance
Install KB5120238. Install KB5120242. Install KB5120229. Install KB5120249. Install KB5120233. Install KB5120228. Install KB5121003. Install KB5120994. Install KB5120240. Install KB5121000. Install KB5120418. Install ...
Microsoft Security Response CenterCVE-2026-65790
HighCVSS 7.8
Windows Message Queuing Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Message Queuing 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 versions10.0.17763.9121, 10.0.20348.5499, 10.0.20348.5440, 10.0.19044.7663
Vendor guidance
Install KB5120238. Install KB5120242. Install KB5120229. Install KB5120249. Install KB5120233. Install KB5120228. Install KB5121003. Install KB5120994. Install KB5120240. Install KB5121000. Install KB5120418. Install ...
Microsoft Security Response CenterCVE-2026-65781
HighCVSS 7.0
Windows Autopilot Elevation of Privilege Vulnerability
Use after free in Windows Autopilot allows an authorized attacker to elevate privileges locally.
Affected productsWindows 11 Version 25H2 for ARM64-based Systems, Windows 11 Version 25H2 for x64-based Systems, Windows 11 Version 24H2 for ARM64-based Systems, Windows 11 Version 24H2 for x64-based Systems
Fixed versions10.0.26200.9168, 10.0.26200.9106, 10.0.26100.9168, 10.0.26100.9106
Vendor guidance
Install KB5121003. Install KB5120994.
Microsoft Security Response CenterCVE-2026-65782
HighCVSS 7.0
Windows Autopilot Elevation of Privilege Vulnerability
Use after free in Windows Autopilot allows an authorized attacker to elevate privileges locally.
Affected productsWindows 11 Version 25H2 for ARM64-based Systems, Windows 11 Version 25H2 for x64-based Systems, Windows 11 Version 24H2 for ARM64-based Systems, Windows 11 Version 24H2 for x64-based Systems
Fixed versions10.0.26200.9168, 10.0.26200.9106, 10.0.26100.9168, 10.0.26100.9106
Vendor guidance
Install KB5121003. Install KB5120994.
Microsoft Security Response CenterCVE-2026-65778
HighCVSS 7.0
Windows Autopilot Elevation of Privilege Vulnerability
Use after free in Windows Autopilot allows an authorized attacker to elevate privileges locally.
Affected productsWindows 11 Version 25H2 for ARM64-based Systems, Windows 11 Version 25H2 for x64-based Systems, Windows 11 Version 24H2 for ARM64-based Systems, Windows 11 Version 24H2 for x64-based Systems
Fixed versions10.0.26200.9168, 10.0.26200.9106, 10.0.26100.9168, 10.0.26100.9106
Vendor guidance
Install KB5121003. Install KB5120994.
Microsoft Security Response CenterCVE-2026-65780
HighCVSS 7.0
Windows Autopilot Elevation of Privilege Vulnerability
Double free in Windows Autopilot allows an authorized attacker to elevate privileges locally.
Affected productsWindows 11 Version 25H2 for ARM64-based Systems, Windows 11 Version 25H2 for x64-based Systems, Windows 11 Version 24H2 for ARM64-based Systems, Windows 11 Version 24H2 for x64-based Systems
Fixed versions10.0.26200.9168, 10.0.26200.9106, 10.0.26100.9168, 10.0.26100.9106
Vendor guidance
Install KB5121003. Install KB5120994. Install KB5121000.
Microsoft Security Response CenterCVE-2026-65777
HighCVSS 5.3
Active Directory Security Feature Bypass Vulnerability
Inadequate encryption strength in Windows Active Directory allows an authorized attacker to bypass a security feature over a network.
Affected productsWindows Server 2022, Windows Server 2022 (Server Core installation), Windows Server 2025 (Server Core installation), Windows 11 Version 25H2 for ARM64-based Systems
Fixed versions10.0.20348.5499, 10.0.20348.5440, 10.0.26100.33296, 10.0.26100.33222
Vendor guidance
Install KB5120242. Install KB5120229. Install KB5120233. Install KB5120228. Install KB5121003. Install KB5120994. Install KB5120240. Install KB5121000.
Microsoft Security Response CenterCVE-2026-65774
HighCVSS 7.8
Windows Installer Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Installer 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 versions10.0.17763.9121, 10.0.20348.5499, 10.0.20348.5440, 10.0.19044.7663
Vendor guidance
Install KB5120238. Install KB5120242. Install KB5120229. Install KB5120249. Install KB5120233. Install KB5120228. Install KB5121003. Install KB5120994. Install KB5120240. Install KB5121000. Install KB5120418. Install ...
Microsoft Security Response CenterCVE-2026-65773
HighCVSS 7.8
Windows Kernel Elevation of Privilege Vulnerability
Improper access control in Windows Kernel 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 versions10.0.17763.9121, 10.0.20348.5499, 10.0.20348.5440, 10.0.19044.7663
Vendor guidance
Install KB5120238. Install KB5120242. Install KB5120229. Install KB5120249. Install KB5120233. Install KB5120228. Install KB5121003. Install KB5120994. Install KB5120240. Install KB5121000.
Microsoft Security Response CenterCVE-2026-65680
HighCVSS 6.7
Microsoft OneDrive for MacOS Elevation of Privilege Vulnerability
Improper link resolution before file access ('link following') in Microsoft OneDrive allows an authorized attacker to elevate privileges locally.
Affected productsOneDrive for MacOS
Fixed versions26.095.0519.0003
Vendor guidance
Release Notes
Microsoft Security Response CenterCVE-2026-65681
HighCVSS 7.5
Windows iSCSI Target Service Denial of Service Vulnerability
Null pointer dereference in Windows iSCSI Target Service allows an unauthorized attacker to deny service 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 versions10.0.17763.9121, 10.0.20348.5499, 10.0.20348.5440, 10.0.26100.33296
Vendor guidance
Install KB5120238. Install KB5120242. Install KB5120229. Install KB5120233. Install KB5120228. Install KB5120418.
Microsoft Security Response CenterCVE-2026-65673
HighCVSS 7.8
Microsoft Entra Connect Elevation of Privilege Vulnerability
Incorrect authorization in Microsoft Entra Connect Sync allows an authorized attacker to elevate privileges over a network.
Affected productsMicrosoft Entra Connect
Fixed versions2.6.84.0
Vendor guidance
Release Notes
Microsoft Security Response CenterCVE-2026-62882
HighCVSS 4.3
Microsoft Outlook Spoofing Vulnerability
Insufficiently protected credentials in Microsoft Office Outlook allows an unauthorized attacker to perform spoofing over a network.
Affected productsMicrosoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems
Fixed versionshttps://aka.ms/OfficeSecurityReleases, 16.0.5565.1000
Vendor guidance
Click to Run Install KB5002755.
Microsoft Security Response CenterCVE-2026-64919
HighCVSS 7.8
Microsoft Access Remote Code Execution Vulnerability
Stack-based buffer overflow in Microsoft Office Access allows an unauthorized attacker to execute code locally.
Affected productsMicrosoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems
Fixed versionshttps://aka.ms/OfficeSecurityReleases, 16.0.5565.1000
Vendor guidance
Click to Run Install KB5002832.
Microsoft Security Response CenterCVE-2026-64917
HighCVSS 5.5
Microsoft Office Word Information Disclosure Vulnerability
Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information locally.
Affected productsMicrosoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems
Fixed versionshttps://aka.ms/OfficeSecurityReleases, 16.112.26081010, 16.0.5565.1000
Vendor guidance
Click to Run Release Notes Install KB5002901.
Microsoft Security Response CenterCVE-2026-64920
HighCVSS 7.8
Microsoft Access Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office Access allows an unauthorized attacker to execute code locally.
Affected productsMicrosoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems
Fixed versionshttps://aka.ms/OfficeSecurityReleases, 16.0.5565.1000
Vendor guidance
Click to Run Install KB5002832.
Microsoft Security Response CenterCVE-2026-64916
HighCVSS 4.6
Microsoft SharePoint Server Spoofing Vulnerability
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
Affected productsMicrosoft SharePoint Enterprise Server 2016, Microsoft SharePoint Server 2019, Microsoft SharePoint Server Subscription Edition
Fixed versions16.0.5565.1001, 16.0.10417.20198, 16.0.19725.20522
Vendor guidance
Install KB5002905. Install KB5002906. Install KB5002894. Install KB5002896. Install KB5002893.
Microsoft Security Response CenterCVE-2026-64915
HighCVSS 7.8
Microsoft Office Word Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code locally.
Affected productsMicrosoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems
Fixed versionshttps://aka.ms/OfficeSecurityReleases, 16.112.26081010, 16.0.5565.1000
Vendor guidance
Click to Run Release Notes Install KB5002901.
Microsoft Security Response CenterCVE-2026-64914
HighCVSS 7.8
Microsoft Access Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office Access allows an unauthorized attacker to execute code locally.
Affected productsMicrosoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems
Fixed versionshttps://aka.ms/OfficeSecurityReleases, 16.0.5565.1000
Vendor guidance
Click to Run Install KB5002813.
Microsoft Security Response CenterCVE-2026-64908
HighCVSS 7.8
Microsoft Access Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office Access allows an unauthorized attacker to execute code locally.
Affected productsMicrosoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems
Fixed versionshttps://aka.ms/OfficeSecurityReleases, 16.0.5565.1000
Vendor guidance
Click to Run Install KB5002832.
Microsoft Security Response CenterCVE-2026-64912
HighCVSS 7.8
Microsoft Access Remote Code Execution Vulnerability
Stack-based buffer overflow in Microsoft Office Access allows an unauthorized attacker to execute code locally.
Affected productsMicrosoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems
Fixed versionshttps://aka.ms/OfficeSecurityReleases, 16.0.5565.1000
Vendor guidance
Click to Run Install KB5002832.
Microsoft Security Response CenterCVE-2026-64905
HighCVSS 7.8
Microsoft Office Word Remote Code Execution Vulnerability
Buffer over-read in Microsoft Office Word allows an unauthorized attacker to execute code locally.
Affected productsMicrosoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems
Fixed versionshttps://aka.ms/OfficeSecurityReleases, 16.112.26081010, 16.0.5565.1000
Vendor guidance
Click to Run Release Notes Install KB5002901.
Microsoft Security Response CenterCVE-2026-64904
HighCVSS 7.8
Microsoft Office Remote Code Execution Vulnerability
Access of resource using incompatible type ('type confusion') in Microsoft Office allows an unauthorized attacker to execute code locally.
Affected productsMicrosoft Office 365 for Mac, Microsoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit Systems
Fixed versions16.112.26081010, https://aka.ms/OfficeSecurityReleases
Vendor guidance
Release Notes Click to Run
Microsoft Security Response CenterCVE-2026-64902
HighCVSS 4.6
Microsoft SharePoint Server Spoofing Vulnerability
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
Affected productsMicrosoft SharePoint Enterprise Server 2016, Microsoft SharePoint Server 2019, Microsoft SharePoint Server Subscription Edition
Fixed versions16.0.5565.1001, 16.0.10417.20198, 16.0.19725.20522
Vendor guidance
Install KB5002905. Install KB5002906. Install KB5002894. Install KB5002896. Install KB5002893.
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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.