Vendor advisories

Microsoft Security Response Center

Browse 17,903 advisories from this official source. Search by product, CVE, severity, or advisory ID.

Current Checked 3 hours ago Checked every 6 hours

17,903 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.

RSS for these results
Microsoft Security Response CenterCVE-2026-40382
HighCVSS 7.8

Windows Telephony Service Elevation of Privilege Vulnerability

Use after free in Windows Telephony Service 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 versions10.0.17763.8755, 10.0.20348.5139, 10.0.20348.5074, 10.0.19044.7291
Vendor guidance

Install KB5087538. Install KB5087545. Install KB5087424. Install KB5087544. Install KB5094127. Install KB5087539. Install KB5087423. Install KB5089549. Install KB5089466. Install KB5087420. Install KB5093998. Install ...

Microsoft Security Response CenterCVE-2026-40380
HighCVSS 6.2

Windows Volume Manager Extension Driver Remote Code Execution Vulnerability

Heap-based buffer overflow in Volume Manager Extension Driver allows an authorized attacker to execute code with a physical attack.

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 versions10.0.17763.8755, 10.0.20348.5139, 10.0.20348.5074, 10.0.19044.7291
Vendor guidance

Install KB5087538. Install KB5087545. Install KB5087424. Install KB5087544. Install KB5094127. Install KB5087539. Install KB5087423. Install KB5089549. Install KB5089466. Install KB5087420. Install KB5093998. Install ...

Microsoft Security Response CenterCVE-2026-40377
HighCVSS 7.8

Microsoft Cryptographic Services Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows Cryptographic Services 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 versions10.0.17763.8755, 10.0.20348.5139, 10.0.20348.5074, 10.0.19044.7291
Vendor guidance

Install KB5087538. Install KB5087545. Install KB5087424. Install KB5087544. Install KB5094127. Install KB5087539. Install KB5087423. Install KB5089549. Install KB5089466. Install KB5087420. Install KB5093998. Install ...

Microsoft Security Response CenterCVE-2026-40370
HighCVSS 8.8

SQL Server Remote Code Execution Vulnerability

External control of file name or path in SQL Server allows an authorized attacker to execute code over a network.

Affected productsMicrosoft SQL Server 2025 for x64-based Systems (CU4), Microsoft SQL Server 2022 for x64-based Systems (CU 24), Microsoft SQL Server 2017 for x64-based Systems (GDR), Microsoft SQL Server 2019 for x64-based Systems (GDR)
Fixed versions17.0.4040.1, 16.0.4252.3, 14.0.2110.2, 15.0.2170.1
Vendor guidance

Install KB5089899. Install KB5089900. Install KB5090347. Install KB5090408. Install KB5089271. Install KB5089270. Install KB5090354. Install KB5091158. Install KB5091223. Install KB5090407.

Microsoft Security Response CenterCVE-2026-40369
HighCVSS 7.8

Windows Kernel Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.

Affected productsWindows Server 2025 (Server Core installation), Windows 11 Version 25H2 for x64-based Systems, Windows 11 Version 25H2 for ARM64-based Systems, Windows 11 Version 24H2 for x64-based Systems
Fixed versions10.0.26100.32860, 10.0.26100.32772, 10.0.26200.8457, 10.0.26200.8390
Vendor guidance

Install KB5087539. Install KB5087423. Install KB5089549. Install KB5089466. Install KB5089548.

Microsoft Security Response CenterCVE-2026-40368
HighCVSS 8.0

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 versions16.0.5552.1002, 16.0.10417.20128, 16.0.19725.20280
Vendor guidance

Install KB5002868. Install KB5002870. Install KB5002863.

Microsoft Security Response CenterCVE-2026-40362
HighCVSS 7.8

Microsoft Excel Remote Code Execution Vulnerability

Use after free 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 versions16.0.10417.20128, https://aka.ms/OfficeSecurityReleases, 16.109.26051019, 16.0.5552.1000
Vendor guidance

Click to Run Release Notes Install KB5002871. Install KB5002865.

Microsoft Security Response CenterCVE-2026-40360
HighCVSS 7.8

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 versions16.0.10417.20128, https://aka.ms/OfficeSecurityReleases, 16.109.26051019, 16.0.5552.1000
Vendor guidance

Click to Run Release Notes Install KB5002871. Install KB5002865.

Microsoft Security Response CenterCVE-2026-40359
HighCVSS 7.8

Microsoft Excel Remote Code Execution Vulnerability

Use after free 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 versions16.0.10417.20128, https://aka.ms/OfficeSecurityReleases, 16.109.26051019, 16.0.5552.1000
Vendor guidance

Click to Run Release Notes Install KB5002871. Install KB5002865.

Microsoft Security Response CenterCVE-2026-40357
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 versions16.0.5552.1002, 16.0.10417.20128, 16.0.19725.20280
Vendor guidance

Install KB5002868. Install KB5002870. Install KB5002863.

Microsoft Security Response CenterCVE-2026-35440
HighCVSS 5.5

Microsoft Word Information Disclosure Vulnerability

Files or directories accessible to external parties 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, 16.0.5552.1000
Vendor guidance

Click to Run Install KB5002858.

Microsoft Security Response CenterCVE-2026-35439
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 versions16.0.5552.1002, 16.0.10417.20128, 16.0.19725.20280
Vendor guidance

Install KB5002868. Install KB5002870. Install KB5002863.

Microsoft Security Response CenterCVE-2026-35436
HighCVSS 8.8

Microsoft Office Click-To-Run Elevation of Privilege Vulnerability

Use after free 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-2026-35424
HighCVSS 7.5

Internet Key Exchange (IKE) Protocol Denial of Service Vulnerability

Missing release of memory after effective lifetime in Windows Internet Key Exchange (IKE) Protocol 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 versions10.0.17763.8755, 10.0.20348.5139, 10.0.20348.5074, 10.0.19044.7291
Vendor guidance

Install KB5087538. Install KB5087545. Install KB5087424. Install KB5087544. Install KB5094127. Install KB5087539. Install KB5087423. Install KB5089549. Install KB5089466. Install KB5087420. Install KB5093998. Install ...

Microsoft Security Response CenterCVE-2026-35423
HighCVSS 5.4

Windows 11 Telnet Client Information Disclosure Vulnerability

Out-of-bounds read in Telnet 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 versions10.0.17763.8755, 10.0.20348.5139, 10.0.20348.5074, 10.0.19044.7291
Vendor guidance

Install KB5087538. Install KB5087545. Install KB5087424. Install KB5087544. Install KB5094127. Install KB5087539. Install KB5087423. Install KB5089549. Install KB5089466. Install KB5087420. Install KB5093998. Install ...

Microsoft Security Response CenterCVE-2026-35422
HighCVSS 6.5

Windows TCP/IP Driver Security Feature Bypass Vulnerability

Authentication bypass using an alternate path or channel in Windows TCP/IP allows an authorized attacker to bypass a security feature 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 versions10.0.17763.8755, 10.0.20348.5139, 10.0.20348.5074, 10.0.19044.7291
Vendor guidance

Install KB5087538. Install KB5087545. Install KB5087424. Install KB5087544. Install KB5094127. Install KB5087539. Install KB5087423. Install KB5089549. Install KB5089466. Install KB5087420. Install KB5093998. Install ...

Microsoft Security Response CenterCVE-2026-35420
HighCVSS 7.8

Windows Kernel Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.

Affected productsWindows Server 2019, Windows Server 2019 (Server Core installation), Windows Server 2022, Windows Server 2022 (Server Core installation)
Fixed versions10.0.17763.8755, 10.0.20348.5139, 10.0.20348.5074, 10.0.26100.32860
Vendor guidance

Install KB5087538. Install KB5087545. Install KB5087424. Install KB5087539. Install KB5087423. Install KB5087541. Install KB5087537. Install KB5087470. Install KB5087471.

Microsoft Security Response CenterCVE-2026-35419
HighCVSS 5.5

Windows DWM Core Library Information Disclosure Vulnerability

Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to disclose information 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 versions10.0.26100.32860, 10.0.26100.32772, 10.0.26200.8457, 10.0.26200.8390
Vendor guidance

Install KB5087539. Install KB5087423. Install KB5089549. Install KB5089466. Install KB5089548.

Microsoft Security Response CenterCVE-2026-35418
HighCVSS 7.8

Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability

Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.

Affected productsWindows Server 2022, Windows Server 2022 (Server Core installation), Windows 10 Version 21H2 for 32-bit Systems, Windows 10 Version 21H2 for x64-based Systems
Fixed versions10.0.20348.5139, 10.0.20348.5074, 10.0.19044.7291, 10.0.17763.8755
Vendor guidance

Install KB5087545. Install KB5087424. Install KB5087544. Install KB5087538. Install KB5094127. Install KB5087539. Install KB5087423. Install KB5089549. Install KB5089466. Install KB5087541. Install KB5093998. Install ...

Microsoft Security Response CenterCVE-2026-35417
HighCVSS 7.8

Windows Win32k Elevation of Privilege Vulnerability

Use after free in Windows Win32K - GRFX 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 versions10.0.17763.8755, 10.0.20348.5139, 10.0.20348.5074, 10.0.19044.7291
Vendor guidance

Install KB5087538. Install KB5087545. Install KB5087424. Install KB5087544. Install KB5094127. Install KB5087539. Install KB5087423. Install KB5089549. Install KB5089466. Install KB5087420. Install KB5093998. Install ...

Microsoft Security Response CenterCVE-2026-35416
HighCVSS 7.0

Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability

Access of resource using incompatible type ('type confusion') in Windows Ancillary Function Driver for WinSock 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 versions10.0.17763.8755, 10.0.20348.5139, 10.0.20348.5074, 10.0.19044.7291
Vendor guidance

Install KB5087538. Install KB5087545. Install KB5087424. Install KB5087544. Install KB5094127. Install KB5087539. Install KB5087423. Install KB5089549. Install KB5089466. Install KB5087420. Install KB5093998. Install ...

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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.

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