59/59 sources · synced 00:50 UTC Customize Public mode
KB5103212

Security update fixing 4 CVEs

Support article Update Catalog CVEs in Security CVE list for a ticket
0Windows versions
4CVEs fixed · 1 critical
0Exploited or in CISA KEV
0Open known issues affecting it
YesRestart required (per MSRC)

Known issues in this update

Windows release health

No known issues listed

Windows release health lists no issues from this KB or the update it builds on.

Issues this update resolves

No resolved issues listed

Windows release health names no issues fixed by this KB.

Security fixes

4 Microsoft CVEs · most urgent first
CVE Vulnerability Severity CVSSEPSSImpact Status
CVE-2026-55008 Microsoft Exchange Server Spoofing VulnerabilityMicrosoft Exchange Server Critical 9.60.9%Spoofing
CVE-2026-55005 Microsoft Exchange Server Remote Code Execution VulnerabilityMicrosoft Exchange Server Important 8.81.0%Remote Code Execution
CVE-2026-55006 Microsoft Exchange Server Elevation of Privilege VulnerabilityMicrosoft Exchange Server Important 7.80.3%Elevation of Privilege
CVE-2026-55009 Microsoft Exchange Server Elevation of Privilege VulnerabilityMicrosoft Exchange Server Important 7.82.5%Elevation of Privilege
ChangeIntel is an independent tool and is not affiliated with or endorsed by Microsoft. Microsoft, Windows, Microsoft 365, Azure, and related names are trademarks of the Microsoft group of companies. Data comes from public sources listed on Sources; every item links to its original page. Dates and statuses can change after they are read. Built by Evotec. This is the public demo. It can also run on your own server, with your Microsoft 365 tenant and device data kept inside your network; Evotec can help you deploy and extend it.