Vendor advisories

Microsoft Security Response Center

Browse 4,355 advisories from this official source. Search by product, CVE, severity, or advisory ID.

Current Checked 46 minutes ago Checked every 6 hours

4,355 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.

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Microsoft Security Response CenterCVE-2026-66804
HighCVSS 7.8

Microsoft Windows Cross Device Service Elevation of Privilege Vulnerability

Improper access control in Windows Cross Device Service allows an authorized attacker to elevate privileges locally.

Affected productsWindows 10 Version 22H2 for x64-based Systems, Windows 10 Version 22H2 for ARM64-based Systems, Windows 10 Version 22H2 for 32-bit Systems, Windows 11 Version 25H2 for ARM64-based Systems
Fixed versions10.0.19045.7663, 10.0.26200.9168, 10.0.26200.9106, 10.0.26100.9168
Vendor guidance

Install KB5120249. Install KB5121003. Install KB5120994. Install KB5121000.

Microsoft Security Response CenterCVE-2026-68817
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 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-2026-65779
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. Install KB5121000.

Microsoft Security Response CenterCVE-2026-70329
HighCVSS 8.8

Microsoft Outlook Remote Code Execution Vulnerability

Integer overflow or wraparound in Microsoft Office Outlook allows an unauthorized attacker to execute code 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-2026-65660
HighCVSS 8.8

Microsoft SharePoint Server Remote Code Execution Vulnerability

Improper control of generation of code ('code injection') 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-2026-56135
MediumCVSS 6.5

In NTFS-3G through 2026.2.25, a heap-based buffer overflow exists in the function build_inherited_id() in libntfs-3g/security.c that allows an attacker to corrupt heap memory in the SUID-root ntfs-3g binary by crafting a malicious NTFS image. The overflow is triggered by creating a file in a crafted directory.

Mariner

Affected productsazl3 ntfs-3g 2022.10.3-3 on Azure Linux 3.0
Microsoft Security Response CenterCVE-2026-56136
MediumCVSS 7.1

In NTFS-3G through 2026.2.25, an out-of-bounds read exists in ntfs_ir_nill() in libntfs-3g/index.c that allows an attacker to read possibly confidential information in an ntfs-3g process by crafting a malicious NTFS image. This read operation is triggered by creation of a file with a crafted name.

Mariner

Affected productsazl3 ntfs-3g 2022.10.3-3 on Azure Linux 3.0
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.

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