Patch today
Exploited in the wild
Confirmed attacks are already happening. Emergency change window.
No actively exploited vulnerabilities in this release.
Updated monthlyMicrosoft Patch Tuesday
Microsoft Patch Tuesday
June 2026
Microsoft's June 2026 Patch Tuesday fixes 220 vulnerabilities across Windows, Microsoft Office and Apps - 49 rated Critical, 4 publicly disclosed before the patch shipped. No active exploitation this month, so lead with the 29 Critical remote code execution fixes.
Released June 9, 2026, 10:00 PT4 publicly disclosed33 KB articles to deploy
June 2026 Patch Tuesday at a glance
220
Microsoft CVEs
excl. Edge & Azure Linux
49
Critical
22% of the release
0
Actively exploited
none this month
4
Publicly disclosed
known before the patch
10.0
Highest CVSS
CVE-2026-45480
33
KB articles
what you actually deploy
Why this number differs from other roundups. Microsoft's June 2026 release document lists 1,285 entries. 520 are Azure Linux (Mariner) OS package updates and 545 are republished Chromium fixes for Edge - neither is a Microsoft product vulnerability. The 220 above is the real Patch Tuesday set. See the breakdown →
Priority order
Patch these first
Ranked by exploitation reality, not score alone. Nothing is under active attack this month, so the Critical remote-code-execution fixes lead.
Patch this week
Publicly disclosed
Details are already public. Working exploits typically follow within days.
CVE-2026-45586Windows Collaborative Translation Framework (CTFMON) Elevation of Privilege VulnerabilityCVE-2026-50656Microsoft Defender Elevation of Privilege VulnerabilityCVE-2026-49160HTTP.sys Denial of Service VulnerabilityCVE-2026-50507Windows BitLocker Security Feature Bypass VulnerabilityPatch this cycle
Critical remote code execution
No known exploitation yet, but network-reachable and high impact.
CVE-2026-47291HTTP.sys Remote Code Execution VulnerabilityCVE-2026-42985Remote Desktop Client Remote Code Execution VulnerabilityCVE-2026-44803Windows Graphics Component Remote Code Execution VulnerabilitySee all 49 Critical →The numbers
What’s in this release
Where the 1,285 entries actually come from
Most roundups quote a single number. These are three unrelated release streams.
220
520
545
220 Microsoft products520 Azure Linux (Mariner)545 Edge (Chromium)
Severity
Microsoft channel only · 220 CVEs
| Critical | 49 |
|---|---|
| Important | 171 |
| Moderate | 0 |
| Low | 0 |
Impact type
What an attacker gains if it works
| Elevation of Privilege | 74 |
|---|---|
| Remote Code Execution | 55 |
| Information Disclosure | 32 |
| Spoofing | 29 |
| Security Feature Bypass | 19 |
| Denial of Service | 7 |
| Tampering | 4 |
Most-affected components
Where this month’s fixes concentrate - filter by any of them in the table below
Microsoft Office SharePoint21Microsoft Office14Remote Desktop Client11Windows DWM Core Library11Microsoft Office Excel8Windows Push Notifications8Windows Secure Boot8Microsoft Exchange Server7Windows Ancillary Function Driver for WinSock7Visual Studio Code6Microsoft Office Word5Windows Kernel5
Every patch
Browse all 1,285 entries
Sorted by risk by default: exploited first, then publicly disclosed, then severity, then CVSS. Search by CVE, title, component or KB number.
| Title | Status | KB | |||||
|---|---|---|---|---|---|---|---|
| Important | CVE-2026-45586 | Windows Collaborative Translation Framework (CTFMON) Elevation of Privilege Vulnerability | EoP | 7.8 | DisclosedMore likely | Windows Collaborative Translation Framework | 5093998 +9 |
| Important | CVE-2026-50656 | Microsoft Defender Elevation of Privilege Vulnerability | EoP | 7.8 | DisclosedMore likely | Microsoft Defender | — |
| Important | CVE-2026-49160 | HTTP.sys Denial of Service Vulnerability | DoS | 7.5 | DisclosedMore likely | HTTP/2 | 5093998 +7 |
| Important | CVE-2026-50507 | Windows BitLocker Security Feature Bypass Vulnerability | Bypass | 6.8 | DisclosedMore likely | Windows BitLocker | 5093998 +7 |
| Critical | CVE-2026-47291 | HTTP.sys Remote Code Execution Vulnerability | RCE | 9.8 | More likely | Windows HTTP.sys | 5093998 +9 |
| Critical | CVE-2026-42985 | Remote Desktop Client Remote Code Execution Vulnerability | RCE | 8.8 | More likely | Remote Desktop Client | 5093998 +9 |
| Critical | CVE-2026-44803 | Windows Graphics Component Remote Code Execution Vulnerability | RCE | 7.8 | More likely | Windows Win32K - GRFX | 5093998 +9 |
| Critical | CVE-2026-44812 | Windows Graphics Component Remote Code Execution Vulnerability | RCE | 7.8 | More likely | Windows Win32K - GRFX | 5093998 +9 |
| Important | CVE-2026-42905 | Windows DWM Core Library Elevation of Privilege Vulnerability | EoP | 7.8 | More likely | Windows DWM Core Library | 5093998 +9 |
| Important | CVE-2026-42980 | NT OS Kernel Elevation of Privilege Vulnerability | EoP | 7.8 | More likely | Windows NT OS Kernel | 5093998 +9 |
| Important | CVE-2026-42986 | Microsoft Graphics Component Elevation of Privilege Vulnerability | EoP | 7.8 | More likely | Microsoft Graphics Component | 5093998 +9 |
| Important | CVE-2026-42989 | Winlogon Elevation of Privilege Vulnerability | EoP | 7.8 | More likely | Winlogon | 5093998 +9 |
| Important | CVE-2026-45658 | Windows BitLocker Security Feature Bypass Vulnerability | Bypass | 7.8 | More likely | Windows BitLocker | 5093998 +9 |
| Important | CVE-2026-45481 | Microsoft SharePoint Server Spoofing Vulnerability | Spoofing | 7.3 | More likely | Microsoft Office SharePoint | 5002873 +2 |
| Important | CVE-2026-47634 | Microsoft SharePoint Server Spoofing Vulnerability | Spoofing | 7.3 | More likely | Microsoft Office SharePoint | 5002873 +1 |
| Important | CVE-2026-50508 | Windows NTLM Spoofing Vulnerability | Spoofing | 6.5 | More likely | Windows NTLM | 5093998 +5 |
| Critical | CVE-2026-26142 | Nuance PowerScribe Remote Code Execution Vulnerability | RCE | 9.8 | — | Nuance PowerScribe | — |
| Critical | CVE-2026-44815 | DHCP Client Service Remote Code Execution Vulnerability | RCE | 9.8 | — | Windows DHCP Client | 5093998 +9 |
| Critical | CVE-2026-45657 | Windows Kernel Remote Code Execution Vulnerability | RCE | 9.8 | — | Windows Kernel | 5093998 +4 |
| Critical | CVE-2025-10263 | ARM: CVE-2025-10263 Completion of affected memory accesses might not be guaranteed by completion of a TLBI [kernel] | EoP | 9.3 | — | Windows Kernel | 5093998 +3 |
| Critical | CVE-2026-47289 | Remote Desktop Client Remote Code Execution Vulnerability | RCE | 8.8 | — | Remote Desktop Client | 5093998 +9 |
| Critical | CVE-2026-44810 | Microsoft Cryptographic Services Elevation of Privilege Vulnerability | EoP | 8.4 | — | Windows Cryptographic Services | 5093998 +4 |
| Critical | CVE-2026-45456 | Microsoft Outlook and Word Remote Code Execution Vulnerability | RCE | 8.4 | — | Microsoft Office | 5002873 +5 |
| Critical | CVE-2026-45458 | Microsoft Outlook and Word Remote Code Execution Vulnerability | RCE | 8.4 | — | Microsoft Office | 5002873 +5 |
| Critical | CVE-2026-45461 | Microsoft Office Remote Code Execution Vulnerability | RCE | 8.4 | — | Microsoft Office | 5002878 |
Your move
What your IT team should do
The same five steps every month, in the order that reduces risk fastest.
Triage by exploitability, not CVSS
Nothing is under active attack this month, so rank by exploitability forecast and reachability rather than raw score. A Critical flaw on an internet-facing service outranks a higher-scoring one behind authentication.
Patch Management vs Vulnerability Management: What's the Difference? →Stage the rollout in rings
This release means 33 distinct update packages to deploy. Pilot on ring 0 within 24 hours and widen to production by day seven - never push the whole set everywhere at once.
What is Ring-Based Patch Deployment? A Guide to Progressive Rollouts →The Patch Management Lifecycle: 6 Stages from Discovery to Verification →Test the known-issue candidates
Check the Windows release health dashboard before promoting past ring 1, and have the rollback path written down before you need it. Kernel, networking and authentication fixes are the ones that historically break things.
12 Patch Management Best Practices for 2026 →Don't stop at the operating system
545 Chromium fixes for Edge shipped alongside this release on their own updater, and Adobe, SAP and Oracle release in the same week. OS-only patching leaves most of your real attack surface untouched.
What is Third-Party Patch Management and Why OS Patching Isn't Enough →Verify installed state, then evidence it
Confirm the patch is actually present on each endpoint rather than trusting that "deployment succeeded". Keep the resulting report - it is the artefact auditors ask for, and reconstructing it later is far more work than capturing it now.
Patch Management: The Complete Guide →Trinetri does steps two through five automatically - detecting the 33 KB articles across every endpoint, staging them in rings, verifying installed state and producing the compliance evidence. See patch management →
Archive
Previous Patch Tuesdays
Every month back to October 2024, with the same breakdown and the full CVE list.
September 2026September 3, 2026August 2026August 11, 2026July 2026July 14, 2026June 2026June 9, 2026May 2026May 12, 2026April 2026April 14, 2026March 2026March 10, 2026February 2026February 10, 2026January 2026January 13, 2026December 2025December 9, 2025November 2025November 11, 2025October 2025October 14, 2025September 2025September 9, 2025August 2025August 12, 2025July 2025July 8, 2025June 2025June 10, 2025May 2025May 13, 2025April 2025April 8, 2025March 2025March 11, 2025February 2025February 11, 2025January 2025January 14, 2025December 2024December 10, 2024November 2024November 12, 2024October 2024October 8, 2024
Patch Tuesday FAQ
Patch Tuesday falls on the second Tuesday of every month, with updates going live at 10:00 a.m. Pacific Time. Microsoft introduced the practice in October 2003, following the Blaster worm, to cut distribution costs and give administrators a predictable cadence instead of patches arriving at random. The 10:00 a.m. timing is deliberate: it leaves a full working week to remediate before the weekend. Internally Microsoft calls it the "B" release; optional "C" and "D" preview releases follow later in the month. The next Patch Tuesday is September 8, 2026.
Microsoft fixed 220 vulnerabilities in June 2026, across Windows, Microsoft Office, Apps and Developer Tools. 49 are rated Critical, 4 were publicly disclosed before the patch shipped, and 0 were already being exploited. Note that Microsoft's release document lists 1,285 entries in total, but 520 of those are Azure Linux package updates and 545 are republished Chromium fixes for Edge, which is why other sources sometimes quote a much larger number.
Exploit Wednesday is the day after Patch Tuesday. Attackers compare the newly released patches against the previous version to locate the flaw each one fixes, then build working exploits from that difference - often within 24 to 48 hours. It is the reason the deployment window matters as much as the patch itself: every hour a Critical remote code execution fix sits undeployed is an hour of measurable exposure.
A workable target for most organisations: actively exploited vulnerabilities within 24 hours, publicly disclosed ones within 72 hours, remaining Critical fixes within seven days, and everything else within the month. CISA's Known Exploited Vulnerabilities catalogue sets binding deadlines for US federal agencies and is a reasonable benchmark for everyone else. Stage the rollout in rings rather than deploying everywhere at once, so a regression is caught on a pilot group instead of in production.
An out-of-band update is a patch released outside the monthly cycle because the risk will not wait for the next Patch Tuesday. Microsoft issues them for actively exploited flaws with no mitigation - most famously during the WannaCry outbreak in 2017, when it took the unusual step of patching versions of Windows that were already out of support.
Yes. Adobe aligned its releases with Patch Tuesday in November 2012, and both SAP's Security Patch Day and Oracle's quarterly Critical Patch Updates are coordinated to the same week. Part of the reason is defensive: staggered releases let attackers reverse-engineer one vendor's patch to find the same underlying flaw in another's still-unpatched product. For IT teams it means the second Tuesday is rarely just a Microsoft problem.
Edge is built on Chromium, so most of its security fixes originate with the Chromium project and are republished by Microsoft under their own CVE identifiers. They ship on Chromium's cadence rather than the Patch Tuesday cycle, and they are delivered by Edge's own updater rather than Windows Update. Counting the 545 Edge entries alongside Microsoft product fixes would inflate the headline number and imply work for your Windows Update rings that does not exist.
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