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18,542 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-2026-49174
HighCVSS 6.1
DNS Client Tampering Vulnerability
Missing authentication for critical function in Microsoft Windows DNS allows an authorized attacker to perform tampering 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 versions10.0.17763.9020, 10.0.20348.5386, 10.0.19044.7548, 10.0.19045.7548
Vendor guidance
Install KB5099538. Install KB5099540. Install KB5099539. Install KB5099536. Install KB5101650. Install KB5101649.
Microsoft Security Response CenterCVE-2026-58608
CriticalCVSS 8.8
Windows Print Spooler Remote Code Execution Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Print Spooler Components allows an authorized 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 versions10.0.17763.9020, 10.0.20348.5386, 10.0.19044.7548, 10.0.19045.7548
Vendor guidance
Install KB5099538. Install KB5099540. Install KB5099539. Install KB5099536. Install KB5101650. Install KB5101649. Install KB5099535. Install KB5099445. Install KB5099444.
Microsoft Security Response CenterCVE-2026-58542
CriticalCVSS 7.8
Windows Media Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows Media allows an unauthorized attacker to execute code 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 versions10.0.26100.33158, 10.0.26200.8875, 10.0.26100.8875, 10.0.28000.2525
Vendor guidance
Install KB5099536. Install KB5101650. Install KB5101649.
Microsoft Security Response CenterCVE-2026-57094
CriticalCVSS 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 versions10.0.17763.9020, 10.0.20348.5386, 10.0.19044.7548, 10.0.19045.7548
Vendor guidance
Install KB5099538. Install KB5099540. Install KB5099539. Install KB5099536. Install KB5101650. Install KB5101649. Install KB5099535.
Microsoft Security Response CenterCVE-2026-57092
CriticalCVSS 9.9
Microsoft Windows VMSwitch Elevation of Privilege Vulnerability
Use after free in Windows VMSwitch allows an authorized 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 versions10.0.17763.9020, 10.0.20348.5386, 10.0.19044.7548, 10.0.19045.7548
Vendor guidance
Install KB5099538. Install KB5099540. Install KB5099539. Install KB5099536. Install KB5101650. Install KB5101649. Install KB5099535. Install KB5099445. Install KB5099444.
Microsoft Security Response CenterCVE-2026-57090
CriticalCVSS 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 versions10.0.17763.9020, 10.0.20348.5386, 10.0.19044.7548, 10.0.19045.7548
Vendor guidance
Install KB5099538. Install KB5099540. Install KB5099539. Install KB5099536. Install KB5101650. Install KB5101649. Install KB5099535.
Microsoft Security Response CenterCVE-2026-57087
CriticalCVSS 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 versions10.0.17763.9020, 10.0.20348.5386, 10.0.19044.7548, 10.0.19045.7548
Vendor guidance
Install KB5099538. Install KB5099540. Install KB5099539. Install KB5099536. Install KB5101650. Install KB5101649. Install KB5099535.
Microsoft Security Response CenterCVE-2026-56189
CriticalCVSS 7.8
Microsoft Windows Media Foundation Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code 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 versions10.0.17763.9020, 10.0.20348.5386, 10.0.19044.7548, 10.0.19045.7548
Vendor guidance
Install KB5099538. Install KB5099540. Install KB5099539. Install KB5099536. Install KB5101650. Install KB5101649. Install KB5099535. Install KB5099445. Install KB5099444.
Microsoft Security Response CenterCVE-2026-56164
MediumCVSS 5.3
Microsoft SharePoint Server Elevation of Privilege Vulnerability
Missing authentication for critical function in Microsoft Office SharePoint allows an unauthorized attacker to elevate privileges over a network.
Affected productsMicrosoft SharePoint Enterprise Server 2016, Microsoft SharePoint Server 2019, Microsoft SharePoint Server Subscription Edition
Fixed versions16.0.5561.1001, 16.0.10417.20175, 16.0.19725.20434
Vendor guidance
The following mitigating factors might be helpful in your situation: Enable AMSI: Ensure the Antimalware Scan Interface (AMSI) is actively integrated and scanning SharePoint and IIS worker process memory. Enable AMSI ...
Microsoft Security Response CenterCVE-2026-55944
CriticalCVSS 9.8
Microsoft Dynamics NAV and Microsoft Dynamics 365 Business Central (On Premises) Remote Code Execution Vulnerability
Deserialization of untrusted data in Microsoft Dynamics NAV allows an unauthorized attacker to execute code over a network.
Affected productsMicrosoft Dynamics NAV 2018
Fixed versions11.0.50704.0
Vendor guidance
Release Notes
Microsoft Security Response CenterCVE-2026-55140
CriticalCVSS 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 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 versions16.111.26071215, https://aka.ms/OfficeSecurityReleases, 16.0.5561.1000, 16.0.5561.1001
Vendor guidance
Release Notes Click to Run Install KB5002748. Install KB5002830.
Microsoft Security Response CenterCVE-2026-55132
CriticalCVSS 7.8
Microsoft Word Remote Code Execution Vulnerability
Double free in Microsoft Office Word allows an unauthorized attacker to execute code locally.
Affected productsMicrosoft Office 365 for Mac, Microsoft SharePoint Enterprise Server 2016, Microsoft SharePoint Server 2019, Microsoft Office 2019 for 32-bit editions
Fixed versions16.111.26071215, 16.0.5561.1001, 16.0.10417.20175, https://aka.ms/OfficeSecurityReleases
Vendor guidance
Release Notes Click to Run Install KB5002891. Install KB5002892. Install KB5002883. Install KB5002885. Install KB5002882. Install KB5002890.
Microsoft Security Response CenterCVE-2026-55127
CriticalCVSS 7.8
Microsoft Word Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code locally.
Affected productsMicrosoft SharePoint Server 2019, 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, 16.111.26071215, 16.0.5561.1000
Vendor guidance
Click to Run Release Notes Install KB5002883. Install KB5002885. Install KB5002890. Install KB5002882. Install KB5002891. Install KB5002892.
Microsoft Security Response CenterCVE-2026-55120
CriticalCVSS 7.8
Microsoft PowerPoint Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office PowerPoint 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, 16.111.26071215, 16.0.5561.1000
Vendor guidance
Click to Run Release Notes Install KB5002867.
Microsoft Security Response CenterCVE-2026-55056
CriticalCVSS 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 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, 16.111.26071215, 16.0.5561.1000
Vendor guidance
Click to Run Release Notes Install KB5002887.
Microsoft Security Response CenterCVE-2026-55049
CriticalCVSS 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 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, 16.111.26071215, 16.0.5561.1000
Vendor guidance
Click to Run Release Notes Install KB5002748.
Microsoft Security Response CenterCVE-2026-55045
CriticalCVSS 8.4
Microsoft Office Remote Code Execution Vulnerability
Out-of-bounds read in Microsoft Office allows an unauthorized attacker to execute code locally.
Affected productsMicrosoft SharePoint Enterprise Server 2016, Microsoft SharePoint Server 2019, Microsoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions
Fixed versions16.0.5561.1001, 16.0.10417.20175, https://aka.ms/OfficeSecurityReleases, 16.111.26071215
Vendor guidance
Click to Run Release Notes Install KB5002891. Install KB5002892. Install KB5002883. Install KB5002885. Install KB5002882. Install KB5002887.
Microsoft Security Response CenterCVE-2026-55040
CriticalCVSS 9.1
Microsoft SharePoint Server Security Feature Bypass Vulnerability
Weak authentication in Microsoft Office SharePoint allows an unauthorized attacker to bypass a security feature over a network.
Affected productsMicrosoft SharePoint Enterprise Server 2016, Microsoft SharePoint Server 2019, Microsoft SharePoint Server Subscription Edition
Fixed versions16.0.5561.1001, 16.0.10417.20175, 16.0.19725.20434
Vendor guidance
Install KB5002891. Install KB5002883. Install KB5002882.
Microsoft Security Response CenterCVE-2026-55033
CriticalCVSS 7.8
Microsoft Word Remote Code Execution Vulnerability
Integer overflow or wraparound in Microsoft Office Word allows an unauthorized attacker to execute code locally.
Affected productsMicrosoft SharePoint Server 2019, 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, 16.111.26071215, 16.0.5561.1000
Vendor guidance
Click to Run Release Notes Install KB5002883. Install KB5002885. Install KB5002890. Install KB5002891. Install KB5002892. Install KB5002882.
Microsoft Security Response CenterCVE-2026-55022
CriticalCVSS 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 versions16.111.26071215, https://aka.ms/OfficeSecurityReleases, 16.0.5561.1000
Vendor guidance
Release Notes Click to Run Install KB5002887.
Microsoft Security Response CenterCVE-2026-55018
CriticalCVSS 7.8
Microsoft Office Remote Code Execution Vulnerability
Use after free 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 versions16.111.26071215, https://aka.ms/OfficeSecurityReleases, 16.0.5561.1000
Vendor guidance
Release Notes Click to Run Install KB5002887.
Microsoft Security Response CenterCVE-2026-55012
CriticalCVSS 7.8
Microsoft Defender Remote Code Execution Vulnerability
Integer overflow or wraparound in Microsoft Defender allows an unauthorized attacker to execute code locally.
Affected productsMicrosoft Malware Protection Engine
Fixed versions1.1.26060.3008
Vendor guidance
Release Notes
Microsoft Security Response CenterCVE-2026-55011
CriticalCVSS 7.8
Microsoft Defender Remote Code Execution Vulnerability
Integer underflow (wrap or wraparound) in Microsoft Defender allows an unauthorized attacker to execute code locally.
Affected productsMicrosoft Malware Protection Engine
Fixed versions1.1.26060.3008
Vendor guidance
Release Notes
Microsoft Security Response CenterCVE-2026-55010
CriticalCVSS 9.8
Minecraft Bedrock Dedicated Server Remote Code Execution Vulnerability
Heap-based buffer overflow in Minecraft Bedrock Dedicated Server allows an unauthorized attacker to execute code over a network.
Affected productsMinecraft Bedrock Dedicated Server
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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.