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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-2026-68807
HighCVSS 7.8
Microsoft Excel Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Affected productsOffice Online Server, Microsoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit Systems
Fixed versions16.0.10417.20175, https://aka.ms/OfficeSecurityReleases, 16.112.26081010, 16.0.5565.1001
Vendor guidance
Click to Run Release Notes Install KB5002884. Install KB5002903.
Microsoft Security Response CenterCVE-2026-68802
HighCVSS 5.5
Microsoft Excel Information Disclosure Vulnerability
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
Affected productsOffice Online Server, Microsoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit Systems
Fixed versions16.0.10417.20175, https://aka.ms/OfficeSecurityReleases, 16.112.26081010, 16.0.5565.1001
Vendor guidance
Click to Run Release Notes Install KB5002884. Install KB5002903.
Microsoft Security Response CenterCVE-2026-68800
HighCVSS 7.8
Microsoft Excel Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Affected productsOffice Online Server, Microsoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit Systems
Fixed versions16.0.10417.20175, https://aka.ms/OfficeSecurityReleases, 16.112.26081010, 16.0.5565.1001
Vendor guidance
Click to Run Release Notes Install KB5002884. Install KB5002903.
Microsoft Security Response CenterCVE-2026-68795
HighCVSS 7.8
Microsoft Excel Remote Code Execution Vulnerability
Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Affected productsMicrosoft Office 365 for Mac, Office Online Server, Microsoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions
Fixed versions16.112.26081010, 16.0.10417.20175, https://aka.ms/OfficeSecurityReleases, 16.0.5565.1001
Vendor guidance
Release Notes Click to Run Install KB5002884. Install KB5002903.
Microsoft Security Response CenterCVE-2026-68793
HighCVSS 7.8
Microsoft Excel Remote Code Execution Vulnerability
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Affected productsOffice Online Server, Microsoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit Systems
Fixed versions16.0.10417.20175, https://aka.ms/OfficeSecurityReleases, 16.112.26081010, 16.0.5565.1001
Vendor guidance
Click to Run Release Notes Install KB5002884. Install KB5002903.
Microsoft Security Response CenterCVE-2026-68792
HighCVSS 7.8
Microsoft Office Elevation of Privilege Vulnerability
Improper neutralization of special elements used in a command ('command injection') in Microsoft Office allows an authorized attacker to elevate privileges 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
Vendor guidance
Click to Run
Microsoft Security Response CenterCVE-2026-65815
HighCVSS 8.8
Microsoft Dynamics 365 On-Premises Remote Code Execution Vulnerability
Deserialization of untrusted data in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to execute code over a network.
Affected productsMicrosoft Dynamics 365 (on-premises) version 9.1
Fixed versions9.1.0047.0006
Vendor guidance
Release Notes
Microsoft Security Response CenterCVE-2026-65814
HighCVSS 7.8
Microsoft Windows Storage Port Driver Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Storage Port 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 versions10.0.17763.9121, 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-2026-65807
HighCVSS 8.8
Microsoft Excel Remote Code Execution Vulnerability
Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Affected productsMicrosoft Office 365 for Mac, Office Online Server, Microsoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions
Fixed versions16.112.26081010, 16.0.10417.20175, https://aka.ms/OfficeSecurityReleases, 16.0.5565.1001
Vendor guidance
Release Notes Click to Run Install KB5002884. Install KB5002903.
Microsoft Security Response CenterCVE-2026-65788
HighCVSS 7.0
Desktop Window Manager Elevation of Privilege Vulnerability
Use after free in Desktop Window Manager 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 versions10.0.26100.33296, 10.0.26100.33222, 10.0.26200.9168, 10.0.26200.9106
Vendor guidance
Install KB5120233. Install KB5120228. Install KB5121003. Install KB5120994. Install KB5120240. Install KB5121000.
Microsoft Security Response CenterCVE-2026-65784
HighCVSS 5.5
Windows NTFS Information Disclosure Vulnerability
Out-of-bounds read in Windows NTFS 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 versions10.0.17763.9121, 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-2026-65785
HighCVSS 6.5
Windows DHCP Client Denial of Service Vulnerability
Uncontrolled resource consumption in Windows DHCP Client allows an unauthorized attacker to deny service over an adjacent network.
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 versions10.0.26100.33296, 10.0.26100.33222, 10.0.26200.9168, 10.0.26200.9106
Vendor guidance
Install KB5120233. Install KB5120228. Install KB5121003. Install KB5120994. Install KB5121000.
Microsoft Security Response CenterCVE-2026-65678
HighCVSS 7.0
Windows Win32k Elevation of Privilege Vulnerability
Use after free in Windows Win32K 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.
Microsoft Security Response CenterCVE-2026-65672
HighCVSS 7.8
Remote Access API Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Remote Access API allows an authorized attacker to elevate privileges locally.
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-2026-65662
HighCVSS 5.5
Windows GDI Information Disclosure Vulnerability
Out-of-bounds read in Windows GDI 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 versions10.0.17763.9121, 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-2026-65663
HighCVSS 8.8
Microsoft SharePoint Server Remote Code Execution Vulnerability
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code 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-2026-65661
HighCVSS 7.8
Microsoft Office Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
Affected productsMicrosoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems, Microsoft Office LTSC 2021 for 32-bit editions, Microsoft Office LTSC 2021 for 64-bit editions
Fixed versionshttps://aka.ms/OfficeSecurityReleases, 16.0.5565.1001, 16.0.5565.1000
Vendor guidance
Click to Run Install KB5002897. Install KB5002791. Install KB5002795. Install KB5002900.
Microsoft Security Response CenterCVE-2026-65658
HighCVSS 8.8
Microsoft SharePoint Server Remote Code Execution Vulnerability
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code 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-2026-65656
HighCVSS 7.8
Microsoft Office Remote Code Execution Vulnerability
Improper neutralization of special elements used in a command ('command injection') in Microsoft Office 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
Vendor guidance
Click to Run
Microsoft Security Response CenterCVE-2026-64922
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-2026-63517
HighCVSS 5.5
Microsoft Office Graphics Component Information Disclosure Vulnerability
Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.
Affected productsMicrosoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems, Microsoft Office LTSC for Mac 2021
Fixed versionshttps://aka.ms/OfficeSecurityReleases, 16.112.26081010, 16.0.5565.1001
Vendor guidance
Click to Run Release Notes Install KB5002897.
Microsoft Security Response CenterCVE-2026-54123
HighCVSS 5.5
Microsoft Defender for Endpoint for Mac Information Disclosure Vulnerability
Exposure of sensitive information to an unauthorized actor in Microsoft Defender for Endpoint allows an authorized attacker to disclose information locally.
Affected productsMicrosoft Defender for Endpoint for Mac
Fixed versions101.26042.0020
Vendor guidance
Release Notes
Microsoft Security Response CenterCVE-2026-62915
HighCVSS 6.5
Microsoft Exchange Server Security Feature Bypass Vulnerability
Missing authorization in Microsoft Exchange Server allows an authorized attacker to bypass a security feature over a network.
Affected productsMicrosoft Exchange Server 2016 Cumulative Update 23, Microsoft Exchange Server Subscription Edition RTM, Microsoft Exchange Server 2019 Cumulative Update 15, Microsoft Exchange Server 2019 Cumulative Update 14
Fixed versions15.01.2507.072, 15.02.2562.046, 15.02.1748.049, 15.02.1544.044
Vendor guidance
Install KB5121576. Install KB5121573. Install KB5121574. Install KB5121575.
Microsoft Security Response CenterCVE-2026-62914
HighCVSS 7.3
Microsoft Exchange Server Spoofing Vulnerability
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Server allows an authorized attacker to perform spoofing over a network.
Affected productsMicrosoft Exchange Server 2016 Cumulative Update 23, Microsoft Exchange Server Subscription Edition RTM, Microsoft Exchange Server 2019 Cumulative Update 15, Microsoft Exchange Server 2019 Cumulative Update 14
Fixed versions15.01.2507.072, 15.02.2562.046, 15.02.1748.049, 15.02.1544.044
Vendor guidance
Install KB5121576. Install KB5121573. Install KB5121574. Install KB5121575.
Before you act
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.