Microsoft June 2026 Patch Tuesday record 206-vulnerability update
Security Patch Release
Summary
Hide ▲
Show ▼
Microsoft shipped a record 206-vulnerability update for its software portfolio, including three publicly disclosed flaws. The release spans Critical and Important issues across Windows and related components, making it a large enterprise patching event. It also includes fixes for Chromium-related code in Edge and adds MaxHeadersCount mitigation for HTTP/2 and HTTP/3 header abuse.
Related Happenings
Microsoft security patch release for CVE-2026-56164
Security Patch Release
H score11
First: 14.07.2026 23:25
Last: 14.07.2026 23:25
Sources 1
About this happening:
Microsoft released a record 622-CVE Patch Tuesday that includes two exploited flaws in SharePoint Server and Active Directory Federation Services, raising urgency...
Microsoft security patch release for CVE-2026-56164
Security Patch ReleaseAbout this happening: Microsoft released a record 622-CVE Patch Tuesday that includes two exploited flaws in SharePoint Server and Active Directory Federation Services, raising urgency...
Microsoft Corp. security patch release for CVE-2026-56155
Security Patch Release
H score48
First: 14.07.2026 22:22
Last: 14.07.2026 22:22
Sources 1
About this happening:
Microsoft released July 2026 Patch Tuesday updates that close at least 570 security holes in Windows and other software, expanding the remediation burden for defen...
Microsoft Corp. security patch release for CVE-2026-56155
Security Patch ReleaseAbout this happening: Microsoft released July 2026 Patch Tuesday updates that close at least 570 security holes in Windows and other software, expanding the remediation burden for defen...
Microsoft July 2026 Patch Tuesday security updates (570 flaws, 3 zero-days)
Security Patch Release
H score36
First: 14.07.2026 21:01
Last: 14.07.2026 21:01
Sources 1
About this happening:
Microsoft's July 2026 Patch Tuesday released security updates for 570 flaws, including three zero-days and two vulnerabilities exploited in attacks, creating immed...
Microsoft July 2026 Patch Tuesday security updates (570 flaws, 3 zero-days)
Security Patch ReleaseAbout this happening: Microsoft's July 2026 Patch Tuesday released security updates for 570 flaws, including three zero-days and two vulnerabilities exploited in attacks, creating immed...
Microsoft security patch release for CVE-2026-42824
Security Patch Release
H score30
First: 15.06.2026 16:00
Last: 15.06.2026 16:00
Sources 1
About this happening:
Microsoft's fix for SearchLeak in Microsoft 365 Copilot Enterprise closed a critical flaw tied to CVE-2026-42824 that could expose mailbox, OneDrive, and SharePo...
Microsoft security patch release for CVE-2026-42824
Security Patch ReleaseAbout this happening: Microsoft's fix for SearchLeak in Microsoft 365 Copilot Enterprise closed a critical flaw tied to CVE-2026-42824 that could expose mailbox, OneDrive, and SharePo...
Microsoft YellowKey patch release (CVE-2026-45585)
Security Patch Release
H score20
First: 11.06.2026 20:43
Last: 11.06.2026 20:43
Sources 1
About this happening:
Microsoft's Patch Tuesday updates this week patched YellowKey (CVE-2026-45585), closing a Windows BitLocker bypass that could expose protected volumes. The vendor rele...
Microsoft YellowKey patch release (CVE-2026-45585)
Security Patch ReleaseAbout this happening: Microsoft's Patch Tuesday updates this week patched YellowKey (CVE-2026-45585), closing a Windows BitLocker bypass that could expose protected volumes. The vendor rele...
Timeline
-
10.06.2026 12:38 4 articles · 1mo ago
Microsoft releases fixes for 206 vulnerabilities across Windows and Edge
Mitigation Patch UpdateMicrosoft released a June 2026 update that fixes a record 206 vulnerabilities across its software portfolio, including three publicly disclosed zero-days and multiple Critical issues in Windows Kernel, HTTP.sys, and Windows DHCP Client. The bundle also patches two non-Microsoft CVEs, addresses BitLocker and UEFI Secure Boot bypasses, plugs MiniPlasma tied to CVE-2020-17103, and introduces a MaxHeadersCount registry setting to help limit HTTP/2 and HTTP/3 header abuse.
Show sources
- Microsoft Patches Record 206 Flaws, Including Three Zero-Days and Critical RCE Bugs — thehackernews.com — 10.06.2026 12:38
- Microsoft Patches Record 206 Flaws, Including Three Zero-Days and Critical RCE Bugs — thehackernews.com — 10.06.2026 12:38
- 11 Old Microsoft-Signed Linux UEFI Shims Could Let Attackers Bypass Secure Boot — thehackernews.com — 14.07.2026 15:46
- Eleven Vulnerable UEFI Shims Enable Secure Boot Bypass — www.infosecurity-magazine.com — 15.07.2026 17:00