Microsoft update

KB5002834

Security Update

View on Microsoft →

Fixed in

Microsoft SharePoint Server 2019 16.0.10417.20097

Fixes 2 records

TI-2026-17365 CVE-2026-21511 · GHSA-x27j-2rq3-h4mw

Microsoft Outlook Spoofing Vulnerability

MEDIUM 46

Deserialization of untrusted data in Microsoft Office Outlook allows an unauthorized attacker to perform spoofing over a network.

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.03967 Published 2026-02-10 Fixed in https://aka.ms/OfficeSecurityReleases, 16.106.26020821 +3 CWE-502

TI-2026-17167 CVE-2026-21260 · GHSA-2pm9-6ww9-wqv9

Microsoft Outlook Spoofing Vulnerability

MEDIUM 42

Exposure of sensitive information to an unauthorized actor in Microsoft Office Outlook allows an unauthorized attacker to perform spoofing over a network.

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.01499 Published 2026-02-10 Fixed in https://aka.ms/OfficeSecurityReleases, 16.0.5539.1002 +2 CWE-200