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Security

Microsoft security updates and public advisory evidence: affected products, fixing updates, exploitation and source coverage.

Security Update Guide CISA KEV

CVEs · all collected releases

400 matches · most urgent first CSVText
Fixed by KB5123065Clear
CVE Vulnerability Severity CVSSEPSSImpact StatusFixed by
CVE-2026-77494 Windows DHCP Server Denial of Service VulnerabilityWindows DHCP Server Important 7.51.2%DoSNetwork
KB5122871KB5122876+4
CVE-2026-77498 Windows DHCP Server Denial of Service VulnerabilityWindows DHCP Server Important 7.51.2%DoSNetwork
KB5122871KB5122876+4
CVE-2026-77499 Windows DHCP Server Denial of Service VulnerabilityWindows DHCP Server Important 7.51.2%DoSNetwork Revised 14 Oct
KB5122871KB5122876+4
CVE-2026-77501 Windows DHCP Server Denial of Service VulnerabilityWindows DHCP Server Important 7.51.2%DoSNetwork
KB5122871KB5122876+4
CVE-2026-77502 Windows DHCP Server Denial of Service VulnerabilityWindows DHCP Server Important 7.51.2%DoSNetwork
KB5122871KB5122876+4
CVE-2026-77886 Windows DHCP Server Denial of Service VulnerabilityWindows DHCP Server Important 7.51.2%DoSNetwork Revised 22 Sep
KB5122871KB5122876+4
CVE-2026-77888 Windows DHCP Server Denial of Service VulnerabilityWindows DHCP Server Important 7.51.2%DoSNetwork
KB5122871KB5122876+4
CVE-2026-77889 Windows DHCP Server Denial of Service VulnerabilityWindows DHCP Server Important 7.51.2%DoSNetwork
KB5122871KB5122876+4
CVE-2026-77890 Windows DHCP Server Denial of Service VulnerabilityWindows DHCP Server Important 7.51.2%DoSNetwork
KB5122871KB5122876+4
CVE-2026-77893 Windows DHCP Server Denial of Service VulnerabilityWindows DHCP Server Important 7.51.2%DoSNetwork
KB5122871KB5122876+4
CVE-2026-77895 Windows DHCP Server Denial of Service VulnerabilityWindows DHCP Server Important 7.51.2%DoSNetwork
KB5122871KB5122876+4
CVE-2026-78446 Windows Distributed File System (DFS) Remote Code Execution VulnerabilityWindows Distributed File System (DFS) Important 7.50.5%RCENetwork Revised 5 Oct
KB5122871KB5122876+8

Advisories

MSRC guidance without a CVE of its own · 1 advisory
ADV260001
Hardening changes for ReFS volumes on removable mediaStarting with Windows updates released on and after October 13, 2026, Microsoft is making hardening changes to the Resilient File System (ReFS) . This change is not enable by default until 2027. Please see Hardening changes for ReFS volumes on removable media for more information.
Published 13 Oct28 affected products
ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 11 Nov 23:12 UTC · 273 of 275 readable · 271 fully read · documentation 469/469 current

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