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Vendor advisories

Microsoft Security Response Center

Browse 17,776 advisories from this official source. Search by product, CVE, severity, or advisory ID.

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17,776 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-2026-40361
CriticalCVSS 8.4

Microsoft Outlook and Word Remote Code Execution Vulnerability

Use after free 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, 16.109.26051019, 16.0.5552.1000
Vendor guidance

Click to Run Release Notes Install KB5002858.

CVE-2026-40361
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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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