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Vendors / Microsoft

Microsoft vulnerabilities being exploited

42 Microsoft flaws were confirmed exploited in the wild in the past 365 days, 4 used in ransomware, across 15 products: Active Directory Federation Services, Configuration Manager, Defender, DirectX, Exchange Server, Internet Explorer, Internet Key Exchange (IKE) Service Extensions, Microsoft and more. If you run any of them, patch these first.

AddedExploited vulnerabilityFix by
2026-10-13CVE-2026-96951 Windows
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.

2026-10-16
2026-09-25CVE-2026-65660 SharePoint
Microsoft SharePoint Code Injection Vulnerability

Microsoft SharePoint contains a code injection vulnerability which could allow an authorized attacker to execute code over a network.

2026-09-28
2026-09-08CVE-2026-85880 Windows
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.

2026-09-22
2026-09-08CVE-2026-81963 Windows
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.

2026-09-22
2026-08-26CVE-2019-1068 SQL Server
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.

2026-08-29
2026-08-18CVE-2026-55040 SharePoint
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.

2026-08-21
2026-08-18CVE-2026-33824 Internet Key Exchange (IKE) Service Extensions
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.

2026-08-21
2026-08-11CVE-2026-68820 Windows Ancillary Function Driver for WinSock
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.

2026-08-25
2026-07-22CVE-2026-50522 SharePoint
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.

2026-07-25
2026-07-16CVE-2026-58644 SharePoint
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.

2026-07-19
2026-07-14CVE-2026-56164 SharePoint Server
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.

2026-07-17
2026-07-14CVE-2026-56155 Active Directory Federation Services
Microsoft Active Directory Federation Services Insufficient Granularity of Access Control Vulnerability

Microsoft Active Directory Federation Services contains an insufficient granularity of access control vulnerability that allows an authorized attacker to elevate privileges locally.

2026-07-28
2026-07-01CVE-2026-45659 SharePoint Server
ransomwareMicrosoft 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.

2026-07-04
2026-05-20CVE-2026-45498 Defender
Microsoft Defender Denial of Service Vulnerability

Microsoft Defender contains an unspecified vulnerability that allows for denial of service.

2026-06-03
2026-05-20CVE-2026-41091 Defender
Microsoft Defender Link Following Vulnerability

Microsoft Defender contains a link following vulnerability that allows an authorized attacker to elevate privileges locally.

2026-06-03
2026-05-20CVE-2010-0806 Internet Explorer
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.

2026-06-03
2026-05-20CVE-2010-0249 Internet Explorer
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.

2026-06-03
2026-05-20CVE-2009-1537 DirectX
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.

2026-06-03
2026-05-20CVE-2008-4250 Windows
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.

2026-06-03
2026-05-15CVE-2026-42897 Microsoft
Microsoft Exchange Server Cross-Site Scripting Vulnerability

Microsoft Exchange Server contains a cross-site scripting vulnerability during web page generation in Outlook Web Access and when certain interaction conditions are met, arbitrary JavaScript can be executed in the browser context.

2026-05-29
2026-04-28CVE-2026-32202 Windows
Microsoft Windows Protection Mechanism Failure Vulnerability

Microsoft Windows Shell contains a protection mechanism failure vulnerability that allows an unauthorized attacker to perform spoofing over a network.

2026-05-12
2026-04-22CVE-2026-33825 Defender
ransomwareMicrosoft Defender Insufficient Granularity of Access Control Vulnerability

Microsoft Defender contains an insufficient granularity of access control vulnerability that could allow an authorized attacker to escalate privileges locally.

2026-05-06
2026-04-14CVE-2026-32201 SharePoint Server
Microsoft SharePoint Server Improper Input Validation Vulnerability

Microsoft SharePoint Server contains an improper input validation vulnerability that allows an unauthorized attacker to perform spoofing over a network.

2026-04-28
2026-04-14CVE-2009-0238 Office
Microsoft Office Remote Code Execution

Microsoft Office Excel contains a remote code execution vulnerability that could allow an attacker to take complete control of an affected system if a user opens a specially crafted Excel file that includes a malformed object.

2026-04-28
2026-04-13CVE-2025-60710 Windows
ransomwareMicrosoft Windows Link Following Vulnerability

Microsoft Windows contains a link following vulnerability that allows for privilege escalation

2026-04-27
2026-04-13CVE-2023-36424 Windows
Microsoft Windows Out-of-Bounds Read Vulnerability

Microsoft Windows Common Log File System Driver contains an out-of-bounds read vulnerability that could allow a threat actor for privileges escalation

2026-04-27
2026-04-13CVE-2023-21529 Exchange Server
ransomwareMicrosoft Exchange Server Deserialization of Untrusted Data Vulnerability

Microsoft Exchange Server contains a deserialization of untrusted data that allows an authenticated attacker to achieve remote code execution.

2026-04-27
2026-04-13CVE-2012-1854 Visual Basic for Applications (VBA)
Microsoft Visual Basic for Applications Insecure Library Loading Vulnerability

Microsoft Visual Basic for Applications (VBA) contains an insecure library loading vulnerability that could allow for remote code execution.

2026-04-27
2026-03-18CVE-2026-20963 SharePoint
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.

2026-03-21
2026-02-17CVE-2008-0015 Windows
Microsoft Windows Video ActiveX Control Remote Code Execution Vulnerability

Microsoft Windows Video ActiveX Control contains a remote code execution vulnerability. An attacker could exploit the vulnerability by constructing a specially crafted Web page. When a user views the Web page, the vulnerability could allow remote code execution. An attacker who successfully exploited this vulnerability could gain the same user rights as the logged-on user.

2026-03-10
2026-02-12CVE-2024-43468 Configuration Manager
Microsoft Configuration Manager SQL Injection Vulnerability

Microsoft Configuration Manager contains an SQL injection vulnerability. An unauthenticated attacker could exploit this vulnerability by sending specially crafted requests to the target environment which are processed in an unsafe manner enabling the attacker to execute commands on the server and/or underlying database.

2026-03-05
2026-02-10CVE-2026-21533 Windows
Microsoft Windows Improper Privilege Management Vulnerability

Microsoft Windows Remote Desktop Services contains an improper privilege management vulnerability that could allow an authorized attacker to elevate privileges locally.

2026-03-03
2026-02-10CVE-2026-21525 Windows
Microsoft Windows NULL Pointer Dereference Vulnerability

Microsoft Windows Remote Access Connection Manager contains a NULL pointer dereference that could allow an unauthorized attacker to deny service locally.

2026-03-03
2026-02-10CVE-2026-21519 Windows
Microsoft Windows Type Confusion Vulnerability

Microsoft Desktop Windows Manager contains a type confusion vulnerability that could allow an authorized attacker to elevate privileges locally.

2026-03-03
2026-02-10CVE-2026-21514 Office
Microsoft Office Word Reliance on Untrusted Inputs in a Security Decision Vulnerability

Microsoft Office Word contains a reliance on untrusted inputs in a security decision vulnerability that could allow an authorized attacker to elevate privileges locally.

2026-03-03
2026-02-10CVE-2026-21513 Windows
Microsoft MSHTML Framework Protection Mechanism Failure Vulnerability

Microsoft MSHTML Framework contains a protection mechanism failure vulnerability that could allow an unauthorized attacker to bypass a security feature over a network.

2026-03-03
2026-02-10CVE-2026-21510 Windows
Microsoft Windows Shell Protection Mechanism Failure Vulnerability

Microsoft Windows Shell contains a protection mechanism failure vulnerability that could allow an unauthorized attacker to bypass a security feature over a network.

2026-03-03
2026-01-26CVE-2026-21509 Office
Microsoft Office Security Feature Bypass Vulnerability

Microsoft Office contains a security feature bypass vulnerability in which reliance on untrusted inputs in a security decision in Microsoft Office could allow an unauthorized attacker to bypass a security feature locally. Some of the impacted product(s) could be end-of-life (EoL) and/or end-of-service (EoS). Users are advised to discontinue use and/or transition to a supported version.

2026-02-16
2026-01-13CVE-2026-20805 Windows
Microsoft Windows Information Disclosure Vulnerability

Microsoft Windows Desktop Windows Manager contains an information disclosure vulnerability that allows an authorized attacker to disclose information locally.

2026-02-03
2026-01-07CVE-2009-0556 Office
Microsoft Office PowerPoint Code Injection Vulnerability

Microsoft Office PowerPoint contains a code injection vulnerability that allows remote attackers to execute arbitrary code via a PowerPoint file with an OutlineTextRefAtom containing an invalid index value that triggers memory corruption.

2026-01-28
2025-12-09CVE-2025-62221 Windows
Microsoft Windows Use After Free Vulnerability

Microsoft Windows Cloud Files Mini Filter Driver contains a use after free vulnerability that can allow an authorized attacker to elevate privileges locally.

2025-12-30
2025-11-12CVE-2025-62215 Windows
Microsoft Windows Race Condition Vulnerability

Microsoft Windows Kernel contains a race condition vulnerability that allows a local attacker with low-level privileges to escalate privileges. Successful exploitation of this vulnerability could enable the attacker to gain SYSTEM-level access.

2025-12-03

Source: CISA Known Exploited Vulnerabilities catalog 2026.10.29 (live). A listing means some versions are affected: check yours in the advisory. Guidance only.