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.
| Added | Exploited vulnerability | Fix by |
|---|---|---|
| 2026-10-13 | CVE-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 |
| 2026-09-25 | CVE-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 |
| 2026-09-08 | CVE-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 |
| 2026-09-08 | CVE-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 |
| 2026-08-26 | CVE-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 |
| 2026-08-18 | CVE-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 |
| 2026-08-18 | CVE-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 |
| 2026-08-11 | CVE-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 |
| 2026-07-22 | CVE-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 |
| 2026-07-16 | CVE-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 |
| 2026-07-14 | CVE-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 |
| 2026-07-14 | CVE-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 |
| 2026-07-01 | CVE-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 |
| 2026-05-20 | CVE-2026-45498 Defender Microsoft Defender Denial of Service Vulnerability Microsoft Defender contains an unspecified vulnerability that allows for denial of service. | 2026-06-03 |
| 2026-05-20 | CVE-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 |
| 2026-05-20 | CVE-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 |
| 2026-05-20 | CVE-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 |
| 2026-05-20 | CVE-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 |
| 2026-05-20 | CVE-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 |
| 2026-05-15 | CVE-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 |
| 2026-04-28 | CVE-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 |
| 2026-04-22 | CVE-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 |
| 2026-04-14 | CVE-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 |
| 2026-04-14 | CVE-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 |
| 2026-04-13 | CVE-2025-60710 Windows ransomwareMicrosoft Windows Link Following Vulnerability Microsoft Windows contains a link following vulnerability that allows for privilege escalation | 2026-04-27 |
| 2026-04-13 | CVE-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 |
| 2026-04-13 | CVE-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 |
| 2026-04-13 | CVE-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 |
| 2026-03-18 | CVE-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 |
| 2026-02-17 | CVE-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 |
| 2026-02-12 | CVE-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 |
| 2026-02-10 | CVE-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 |
| 2026-02-10 | CVE-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 |
| 2026-02-10 | CVE-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 |
| 2026-02-10 | CVE-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 |
| 2026-02-10 | CVE-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 |
| 2026-02-10 | CVE-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 |
| 2026-01-26 | CVE-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 |
| 2026-01-13 | CVE-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 |
| 2026-01-07 | CVE-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 |
| 2025-12-09 | CVE-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 |
| 2025-11-12 | CVE-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.