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Products by Microsoft Sorted by Most Security Vulnerabilities since 2018
Recent Microsoft Security Advisories
| Advisory | Title | Published |
|---|---|---|
| CVE-2026-114147 | CVE-2026-114147 ASP.NET Core Denial of Service Vulnerability | November 11, 2026 |
| CVE-2026-114150 | CVE-2026-114150 ASP.NET Core Information Disclosure Vulnerability | November 11, 2026 |
| CVE-2026-114146 | CVE-2026-114146 ASP.NET Core Elevation of Privilege Vulnerability | November 11, 2026 |
| CVE-2026-114154 | CVE-2026-114154 ASP.NET Core Denial of Service Vulnerability | November 11, 2026 |
| CVE-2026-114156 | CVE-2026-114156 ASP.NET Core Security Feature Bypass Vulnerability | November 11, 2026 |
| CVE-2026-114157 | CVE-2026-114157 ASP.NET Core Security Feature Bypass Vulnerability | November 11, 2026 |
| CVE-2026-114149 | CVE-2026-114149 ASP.NET Core Denial of Service Vulnerability | November 11, 2026 |
| CVE-2026-114152 | CVE-2026-114152 Visual Studio Remote Code Execution Vulnerability | November 11, 2026 |
| CVE-2026-114155 | CVE-2026-114155 .NET Elevation of Privilege Vulnerability | November 11, 2026 |
| CVE-2026-114151 | CVE-2026-114151 Visual Studio Remote Code Execution Vulnerability | November 11, 2026 |
Known Exploited Microsoft Vulnerabilities
The following Microsoft vulnerabilities have recently been marked by CISA as Known to be Exploited by threat actors.
| Title | Description | Added |
|---|---|---|
| Microsoft Office Outlook Missing User Interaction for Potentially Unsafe Action Vulnerability |
Microsoft Office Outlook contains a missing user interaction for potentially unsafe action vulnerability that allows an unauthorized attacker to perform spoofing over a network. CVE-2026-124194 Exploit Probability: 1.6% |
November 10, 2026 |
| Microsoft Windows Command Injection Vulnerability |
Microsoft Windows Shell contains a command injection vulnerability that allows an unauthorized attacker to bypass a security feature over a network. CVE-2026-96951 Exploit Probability: 9.8% |
October 13, 2026 |
| Microsoft SharePoint Code Injection Vulnerability |
Microsoft SharePoint contains a code injection vulnerability which could allow an authorized attacker to execute code over a network. CVE-2026-65660 Exploit Probability: 9.9% |
September 25, 2026 |
| Microsoft Windows Heap-Based Buffer Overflow Vulnerability |
Microsoft Windows Advanced Local Procedure Call contains a heap-based buffer overflow vulnerability that allows an attacker to elevate privileges locally. CVE-2026-85880 Exploit Probability: 0.4% |
September 8, 2026 |
| Microsoft Windows Link Following Vulnerability |
Microsoft Windows Update Stack contains a link following vulnerability that allows a local attacker to escalate privileges locally up to SYSTEM. CVE-2026-81963 Exploit Probability: 7.1% |
September 8, 2026 |
| Microsoft SQL Server Remote Code Execution Vulnerability |
Microsoft SQL Server contains a remote code execution vulnerability that could allow an attacker to execute code in the context of the SQL Server Database Engine service account. CVE-2019-1068 Exploit Probability: 57.3% |
August 26, 2026 |
| Microsoft Internet Key Exchange (IKE) Service Extensions Double Free Vulnerability |
Microsoft Internet Key Exchange (IKE) Service Extensions contains a double free vulnerability that could enable remote code execution. CVE-2026-33824 Exploit Probability: 77.4% |
August 18, 2026 |
| Microsoft SharePoint Weak Authentication Vulnerability |
Microsoft SharePoint contains a weak authentication vulnerability which allows an unauthorized attacker to bypass a security feature over a network. CVE-2026-55040 Exploit Probability: 69.5% |
August 18, 2026 |
| Microsoft Windows Ancillary Function Driver for WinSock Use-After-Free Vulnerability |
Microsoft Windows Ancillary Function Driver for WinSock contains a use-after-free vulnerability that allows an authorized attacker to elevate privileges locally. CVE-2026-68820 Exploit Probability: 8.6% |
August 11, 2026 |
| Microsoft SharePoint Deserialization of Untrusted Data Vulnerability |
Microsoft SharePoint contains a deserialization of untrusted data vulnerability which could allow an unauthorized attacker to execute code over a network. CVE-2026-50522 Exploit Probability: 3.0% |
July 22, 2026 |
| Microsoft SharePoint Deserialization of Untrusted Data Vulnerability |
Microsoft SharePoint contains a deserialization of untrusted data vulnerability that allows an unauthorized attacker to execute code over a network. CVE-2026-58644 Exploit Probability: 15.9% |
July 16, 2026 |
| Microsoft SharePoint Server Missing Authentication for Critical Function Vulnerability |
Microsoft SharePoint contains a missing authentication for critical function vulnerability that allows an unauthorized attacker to elevate privileges over a network. CVE-2026-56164 Exploit Probability: 1.0% |
July 14, 2026 |
| Microsoft Active Directory Federation Services Insufficient Granularity of Access Control Vulnerabil |
Microsoft Active Directory Federation Services contains an insufficient granularity of access control vulnerability that allows an authorized attacker to elevate privileges locally. CVE-2026-56155 Exploit Probability: 0.3% |
July 14, 2026 |
| Microsoft SharePoint Server Deserialization of Untrusted Data Vulnerability |
Microsoft SharePoint Server contains a deserialization of untrusted data vulnerability which allows an authorized attacker to execute code over a network. CVE-2026-45659 Exploit Probability: 80.2% |
July 1, 2026 |
| Microsoft DirectX NULL Byte Overwrite Vulnerability |
Microsoft DirectX contains a NULL byte overwrite vulnerability in the QuickTime Movie Parser Filter in quartz.dll in DirectShow which could allow remote attackers to execute arbitrary code via a crafted QuickTime media file. CVE-2009-1537 Exploit Probability: 51.1% |
May 20, 2026 |
| Microsoft Defender Denial of Service Vulnerability |
Microsoft Defender contains an unspecified vulnerability that allows for denial of service. CVE-2026-45498 Exploit Probability: 63.1% |
May 20, 2026 |
| Microsoft Windows Buffer Overflow Vulnerability |
Microsoft Windows contains a buffer overflow vulnerability in the Windows Server Service that allows remote attackers to execute arbitrary code via a crafted RPC request that triggers an overflow during path canonicalization. CVE-2008-4250 Exploit Probability: 98.8% |
May 20, 2026 |
| Microsoft Internet Explorer Use-After-Free Vulnerability |
Microsoft Internet Explorer contains an use-after-free vulnerability that could allow remote attackers to execute arbitrary code by accessing a pointer associated with a deleted object. The impacted product could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization. CVE-2010-0249 Exploit Probability: 91.9% |
May 20, 2026 |
| Microsoft Defender Link Following Vulnerability |
Microsoft Defender contains a link following vulnerability that allows an authorized attacker to elevate privileges locally. CVE-2026-41091 Exploit Probability: 8.2% |
May 20, 2026 |
| Microsoft Internet Explorer Use-After-Free Vulnerability |
Microsoft Internet Explorer contains an use-after-free vulnerability that could allow remote attackers to execute arbitrary code via vectors involving access to an invalid pointer after the deletion of an object. The impacted product could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization. CVE-2010-0806 Exploit Probability: 82.1% |
May 20, 2026 |
Of the known exploited vulnerabilities above, 8 are in the top 1%, or the 99th percentile of the EPSS exploit probability rankings. 5 known exploited Microsoft vulnerabilities are in the top 5% (95th percentile or greater) of the EPSS exploit probability rankings.
Top 10 Riskiest Microsoft Vulnerabilities
Based on the current exploit probability, these Microsoft vulnerabilities are on CISA's Known Exploited vulnerabilities list (KEV) and are ranked by the current EPSS exploit probability.
| Rank | CVE | EPSS | Vulnerability |
|---|---|---|---|
| 1 | CVE-2021-34473 | 100.0% | Microsoft Exchange Server Remote Code Execution Vulnerability |
| 2 | CVE-2019-0708 | 100.0% | "BlueKeep" Microsoft Windows Remote Desktop Remote Code Execution Vulnerability |
| 3 | CVE-2015-1635 | 100.0% | Microsoft HTTP.sys Remote Code Execution Vulnerability |
| 4 | CVE-2025-53770 | 100.0% | Microsoft SharePoint Deserialization of Untrusted Data Vulnerability |
| 5 | CVE-2021-26855 | 100.0% | Microsoft OWA Exchange Control Panel (ECP) Exploit Chain |
| 6 | CVE-2025-49704 | 100.0% | Microsoft SharePoint Code Injection Vulnerability |
| 7 | CVE-2021-34523 | 100.0% | Microsoft Exchange Server Privilege Escalation Vulnerability |
| 8 | CVE-2023-29357 | 100.0% | Microsoft SharePoint Server Privilege Escalation Vulnerability |
| 9 | CVE-2025-59287 | 100.0% | Microsoft Windows Server Update Service (WSUS) Deserialization of Untrusted Data Vulnerability |
| 10 | CVE-2012-0158 | 100.0% | Microsoft MSCOMCTL.OCX Remote Code Execution Vulnerability |
By the Year
In 2026 there have been 9874 vulnerabilities in Microsoft with an average score of 7.3 out of ten. Last year, in 2025 Microsoft had 2759 security vulnerabilities published. That is, 7115 more vulnerabilities have already been reported in 2026 as compared to last year. However, the average CVE base score of the vulnerabilities in 2026 is greater by 0.06.
| Year | Vulnerabilities | Average Score |
|---|---|---|
| 2026 | 9874 | 7.28 |
| 2025 | 2759 | 7.23 |
| 2024 | 2182 | 7.39 |
| 2023 | 1695 | 7.21 |
| 2022 | 1389 | 7.43 |
| 2021 | 1153 | 7.44 |
| 2020 | 1253 | 7.19 |
| 2019 | 831 | 7.08 |
| 2018 | 661 | 7.03 |
It may take a day or so for new Microsoft vulnerabilities to show up in the stats or in the list of recent security vulnerabilities. Additionally vulnerabilities may be tagged under a different product or component name.
Recent Microsoft Security Vulnerabilities
| CVE | Date | Vulnerability | Products |
|---|---|---|---|
| CVE-2026-120003 | Nov 10, 2026 |
Nov 2026: Microsoft Office Remote Code Execution VulnerabilityHeap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code over a network. |
And others... |
| CVE-2026-120002 | Nov 10, 2026 |
Nov 2026: Microsoft SharePoint Server Elevation of Privilege VulnerabilityIncorrect authorization in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network. |
|
| CVE-2026-120000 | Nov 10, 2026 |
Nov 2026: Microsoft Office SharePoint Remote Code Execution VulnerabilityDeserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network. |
|
| CVE-2026-120001 | Nov 10, 2026 |
Nov 2026: Microsoft Office PowerPoint Remote Code Execution VulnerabilityHeap-based buffer overflow in Microsoft Office PowerPoint allows an unauthorized attacker to execute code over a network. |
And others... |
| CVE-2026-119998 | Nov 10, 2026 |
Nov 2026: Microsoft Office Security Feature Bypass VulnerabilityProduct ui does not warn user of unsafe actions in Microsoft Office allows an unauthorized attacker to bypass a security feature over a network. |
And others... |
| CVE-2026-119999 | Nov 10, 2026 |
Nov 2026: Microsoft Office Excel Information Disclosure VulnerabilityOut-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network. |
And others... |
| CVE-2026-119996 | Nov 10, 2026 |
Nov 2026: Microsoft Office Outlook Remote Code Execution VulnerabilityHeap-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network. |
And others... |
| CVE-2026-119997 | Nov 10, 2026 |
Nov 2026: Microsoft Office Outlook Remote Code Execution VulnerabilityHeap-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code locally. |
And others... |
| CVE-2026-119995 | Nov 10, 2026 |
Nov 2026: Microsoft Office Outlook Remote Code Execution VulnerabilityHeap-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network. |
And others... |
| CVE-2026-119993 | Nov 10, 2026 |
Nov 2026: Microsoft Office Outlook Information Disclosure VulnerabilityAccess of resource using incompatible type ('type confusion') in Microsoft Office Outlook allows an unauthorized attacker to disclose information over a network. |
And others... |
| CVE-2026-118732 | Nov 10, 2026 |
Nov 2026: Microsoft Office Excel Remote Code Execution VulnerabilityUse after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
And others... |
| CVE-2026-118731 | Nov 10, 2026 |
Nov 2026: Microsoft Office Excel Remote Code Execution VulnerabilityStack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
And others... |
| CVE-2026-118729 | Nov 10, 2026 |
Nov 2026: Microsoft Office Excel Remote Code Execution VulnerabilityUse after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
And others... |
| CVE-2026-118730 | Nov 10, 2026 |
Nov 2026: Microsoft Office Excel Remote Code Execution VulnerabilityUse after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
And others... |
| CVE-2026-118728 | Nov 10, 2026 |
Nov 2026: Microsoft Office Excel Information Disclosure VulnerabilityOut-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network. |
And others... |
| CVE-2026-118726 | Nov 10, 2026 |
Nov 2026: Microsoft Office Excel Remote Code Execution VulnerabilityHeap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
And others... |
| CVE-2026-118727 | Nov 10, 2026 |
Nov 2026: Microsoft Office Excel Information Disclosure VulnerabilityOut-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network. |
And others... |
| CVE-2026-118725 | Nov 10, 2026 |
Nov 2026: Microsoft Office Excel Elevation of Privilege VulnerabilityOut-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to elevate privileges over a network. |
And others... |
| CVE-2026-118724 | Nov 10, 2026 |
Nov 2026: Microsoft Office Excel Remote Code Execution VulnerabilityUntrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
And others... |
| CVE-2026-118723 | Nov 10, 2026 |
Nov 2026: Microsoft Office Excel Remote Code Execution VulnerabilityUntrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to execute code locally. |
And others... |
| CVE-2026-118722 | Nov 10, 2026 |
Nov 2026: Microsoft Office Excel Remote Code Execution VulnerabilityHeap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
And others... |
| CVE-2026-118721 | Nov 10, 2026 |
Nov 2026: Microsoft Office Excel Remote Code Execution VulnerabilityHeap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
And others... |
| CVE-2026-118720 | Nov 10, 2026 |
Nov 2026: Microsoft Office Excel Remote Code Execution VulnerabilityStack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
And others... |
| CVE-2026-118719 | Nov 10, 2026 |
Nov 2026: Microsoft Office Excel Remote Code Execution VulnerabilityDouble free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
And others... |
| CVE-2026-118718 | Nov 10, 2026 |
Nov 2026: Microsoft Office Excel Remote Code Execution VulnerabilityHeap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
And others... |
| CVE-2026-118717 | Nov 10, 2026 |
Nov 2026: Microsoft Office Excel Remote Code Execution VulnerabilityStack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
And others... |
| CVE-2026-118716 | Nov 10, 2026 |
Nov 2026: Microsoft Office Excel Remote Code Execution VulnerabilityUse after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
And others... |
| CVE-2026-118715 | Nov 10, 2026 |
Nov 2026: Microsoft Office Excel Elevation of Privilege VulnerabilityHeap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to elevate privileges over a network. |
And others... |
| CVE-2026-118714 | Nov 10, 2026 |
Nov 2026: Microsoft Office Excel Remote Code Execution VulnerabilityHeap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
And others... |
| CVE-2026-118713 | Nov 10, 2026 |
Nov 2026: Microsoft Office Excel Remote Code Execution VulnerabilityUse after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
And others... |
| CVE-2026-118712 | Nov 10, 2026 |
Nov 2026: Microsoft Office Excel Remote Code Execution VulnerabilityInteger underflow (wrap or wraparound) in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
And others... |
| CVE-2026-118711 | Nov 10, 2026 |
Nov 2026: Microsoft Office Excel Remote Code Execution VulnerabilityStack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
And others... |
| CVE-2026-118709 | Nov 10, 2026 |
Nov 2026: Microsoft Office Excel Remote Code Execution VulnerabilityHeap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
And others... |
| CVE-2026-118710 | Nov 10, 2026 |
Nov 2026: Microsoft Office Excel Remote Code Execution VulnerabilityUse after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
And others... |
| CVE-2026-118708 | Nov 10, 2026 |
Nov 2026: Microsoft Office Excel Remote Code Execution VulnerabilityRelease of invalid pointer or reference in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
And others... |
| CVE-2026-118707 | Nov 10, 2026 |
Nov 2026: Microsoft Office Excel Remote Code Execution VulnerabilityHeap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
And others... |
| CVE-2026-118706 | Nov 10, 2026 |
Nov 2026: Microsoft Office Excel Remote Code Execution VulnerabilityUse after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
And others... |
| CVE-2026-118705 | Nov 10, 2026 |
Nov 2026: Microsoft Office Excel Remote Code Execution VulnerabilityHeap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
And others... |
| CVE-2026-118704 | Nov 10, 2026 |
Nov 2026: Microsoft Office Excel Remote Code Execution VulnerabilityStack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
And others... |
| CVE-2026-118703 | Nov 10, 2026 |
Nov 2026: Microsoft Office Excel Remote Code Execution VulnerabilityUse after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
And others... |
| CVE-2026-118702 | Nov 10, 2026 |
Nov 2026: Microsoft Office Excel Remote Code Execution VulnerabilityDouble free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
And others... |
| CVE-2026-118701 | Nov 10, 2026 |
Nov 2026: Microsoft Office Excel Remote Code Execution VulnerabilityHeap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
And others... |
| CVE-2026-118700 | Nov 10, 2026 |
Nov 2026: Microsoft Office Excel Remote Code Execution VulnerabilityStack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
And others... |
| CVE-2026-118302 | Nov 10, 2026 |
Nov 2026: Microsoft Office Excel Remote Code Execution VulnerabilityHeap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
And others... |
| CVE-2026-118301 | Nov 10, 2026 |
Nov 2026: Microsoft Office Excel Remote Code Execution VulnerabilityUse of uninitialized resource in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
And others... |
| CVE-2026-118300 | Nov 10, 2026 |
Nov 2026: Microsoft Office Excel Information Disclosure VulnerabilityOut-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network. |
And others... |
| CVE-2026-118299 | Nov 10, 2026 |
Nov 2026: Microsoft Office Excel Remote Code Execution VulnerabilityHeap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
And others... |
| CVE-2026-118298 | Nov 10, 2026 |
Nov 2026: Microsoft Office Excel Remote Code Execution VulnerabilityHeap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
And others... |
| CVE-2026-118297 | Nov 10, 2026 |
Nov 2026: Microsoft Office Excel Remote Code Execution VulnerabilityHeap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
And others... |
| CVE-2026-118296 | Nov 10, 2026 |
Nov 2026: Microsoft Office Excel Remote Code Execution VulnerabilityDouble free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
And others... |