// #cve-2026-44815
3 articles
Windows DHCP Rogue Server Attacks: NAC and DHCP Guard Controls Against CVE-2026-44815
CVE-2026-44815 in the Windows DHCP Client enables SYSTEM-level RCE via a rogue DHCP server on the same broadcast domain. DHCP Snooping (DHCP Guard) on enterprise switches is the primary compensating control while patching proceeds, but its effectiveness depends on consistent enforcement across all access-layer switches and correct handling of edge cases like DHCP relay configurations.
Three CVSS 9.8 Windows Flaws Demand Emergency Action: Kernel RCE, Wormable HTTP.sys, and DHCP Client
CVE-2026-45657 (Windows Kernel), CVE-2026-47291 (HTTP.sys), and CVE-2026-44815 (DHCP Client) each carry CVSS 9.8 and enable unauthenticated remote code execution. All three were publicly disclosed before Microsoft's June patch, giving attackers a head start. This article provides technical detail and remediation guidance for each flaw.
Microsoft June 2026 Patch Tuesday: 198 CVEs and Six Zero-Days Including Wormable CVSS 9.8 HTTP.sys Flaw
Microsoft's June 2026 Patch Tuesday addresses 198 vulnerabilities across Windows, Office, Azure, and server components — including three CVSS 9.8 critical remote code execution flaws and six publicly disclosed zero-days. HTTP.sys CVE-2026-47291 is wormable, requiring no authentication or user interaction against any Windows Server with IIS or HTTP API exposed.