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KB5129955

Security update fixing 1 CVE

Support article Update Catalog CVEs in Security CVE list for a ticket
0Windows versions
1CVEs fixed · 0 critical
0Exploited or in CISA KEV
0Open known issues affecting it
—Restart 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

1 Microsoft CVE · most urgent first
CVE Vulnerability Severity CVSSImpact Status
CVE-2026-96940 Microsoft Exchange Server Elevation of Privilege VulnerabilityMicrosoft Exchange Server Important 8.8Elevation of Privilege
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