Patch Tuesday June 2026: what's exploited and what to install first
Microsoft released fixes for 201 vulnerabilities on Jun 9, 2026. None are known to be exploited yet. 3 were publicly disclosed before the fix came out. 32 are rated Critical.
Publicly disclosed before the fix
Details were public before Microsoft's update, so attacks often follow quickly.
- CVSS 7.8 Windows Collaborative Translation Framework (CTFMON) Elevation of Privilege Vulnerability
- CVSS 7.5 HTTP.sys Denial of Service Vulnerability
- CVSS 6.8 Windows BitLocker Security Feature Bypass Vulnerability
Critical fixes
- CVSS 9.8 Nuance PowerScribe Remote Code Execution Vulnerability
- CVSS 9.8 DHCP Client Service Remote Code Execution Vulnerability
- CVSS 9.8 Windows Kernel Remote Code Execution Vulnerability
- CVSS 9.8 HTTP.sys Remote Code Execution Vulnerability
- CVSS 8.8 Azure Kubernetes Service (AKS) Remote Code Execution Vulnerability
- CVSS 8.8 Remote Desktop Client Remote Code Execution Vulnerability
- CVSS 8.8 Windows Active Directory Domain Services Remote Code Execution Vulnerability
- CVSS 8.8 Remote Desktop Client Remote Code Execution Vulnerability
- CVSS 8.4 Microsoft Cryptographic Services Elevation of Privilege Vulnerability
- CVSS 8.4 Microsoft Outlook and Word Remote Code Execution Vulnerability
- CVSS 8.4 Microsoft Outlook and Word Remote Code Execution Vulnerability
- CVSS 8.4 Microsoft Office Remote Code Execution Vulnerability
How to install this month's updates
- Windows PCs: Settings → Windows Update → Check for updates, install, and restart. Restarting is what actually applies the fix.
- Managed fleets: approve this month's updates in Intune, Windows Update for Business or WSUS, and push the exploited fixes first instead of waiting for your normal ring schedule.
- Microsoft 365 Apps / Office: usually updates itself; in any Office app, File → Account → Update Options → Update Now to make sure.
- Servers: Exchange, SharePoint and SQL Server need their own update packages; they don't come through Windows Update alone.
- Check it worked: confirm the build number afterwards (run
winver) or check with our version checker.
By type
| Type | Fixes |
|---|---|
| Elevation of Privilege | 65 |
| Remote Code Execution | 54 |
| Spoofing | 27 |
| Information Disclosure | 27 |
| Security Feature Bypass | 18 |
| Denial of Service | 7 |
| Tampering | 3 |
Most-patched products
| Product | Fixes |
|---|---|
| Microsoft Office SharePoint | 21 |
| Microsoft Office | 14 |
| Windows DWM Core Library | 11 |
| Remote Desktop Client | 11 |
| Windows Push Notifications | 8 |
| Microsoft Office Excel | 8 |
| Windows Secure Boot | 8 |
| Windows Ancillary Function Driver for WinSock | 7 |
The next Patch Tuesday is Nov 10, 2026 (in 5 days). Microsoft usually publishes around 10 a.m. Pacific; this page updates within the hour.
Questions
What should I patch first from Patch Tuesday June 2026?
Nothing is known to be exploited yet, so follow your normal schedule, starting with the Critical fixes.
When is the next Patch Tuesday?
Nov 10, 2026. Microsoft releases security updates on the second Tuesday of every month.
Source: Microsoft's June 2026 release notes and CISA's exploited-vulnerability catalog. Counts exclude Chromium fixes shipped in Microsoft Edge. Microsoft last revised this release on Nov 4, 2026. General information only; confirm details with Microsoft.