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KB5121610

Security update fixing 9 CVEs

Support article Update Catalog CVEs in Security CVE list for a ticket
0Windows versions
9CVEs fixed · 0 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

9 Microsoft CVEs · most urgent first
CVE Vulnerability Severity CVSSEPSSImpact Status
CVE-2026-69356 Microsoft Exchange Server Spoofing VulnerabilityMicrosoft Exchange Server Important 9.30.8%Spoofing
CVE-2026-69641 Microsoft Exchange Server Elevation of Privilege VulnerabilityMicrosoft Exchange Server Important 9.10.9%Elevation of Privilege
CVE-2026-69355 Microsoft Exchange Server Remote Code Execution VulnerabilityMicrosoft Exchange Server Important 8.80.9%Remote Code Execution
CVE-2026-55007 Microsoft Exchange Server Remote Code Execution VulnerabilityMicrosoft Exchange Server Important 8.10.7%Remote Code Execution
CVE-2026-69380 Microsoft Exchange Server Elevation of Privilege VulnerabilityMicrosoft Exchange Server Important 8.10.7%Elevation of Privilege
CVE-2026-69378 Microsoft Exchange Server Denial of Service VulnerabilityMicrosoft Exchange Server Important 7.51.2%Denial of Service
CVE-2026-69361 Microsoft Exchange Server Spoofing VulnerabilityMicrosoft Exchange Server Important 6.50.9%Spoofing
CVE-2026-69375 Microsoft Exchange Server Tampering VulnerabilityMicrosoft Exchange Server Important 6.50.7%Tampering
CVE-2026-69382 Microsoft Exchange Server Information Disclosure VulnerabilityMicrosoft Exchange Server Important 5.90.5%Information Disclosure
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