Microsoft has 2,953 CVEs on record between 2013 and 2026. Disclosure cadence is accelerating: 2136 in the last 90 days against 414 in the 90 before. The busiest recent month was September 2026 with 1005. The median CVSS is 7.8 (high), with 178 rated critical. 3% have been exploited in the wild, in line with the corpus average. The median gap from publication to a KEV listing is 113 days (91 cases). The dominant weakness classes are CWE-122 (585) and CWE-416 (512). Most affected products: windows_10_1607 (644), Windows 10 Version 1607 (481), Microsoft 365 Apps for Enterprise (209).
CVEs per month
Last 12 months, by publish date
- Exploited share
- 3% vs 1% corpus
- Median CVSS
- 7.8
- Publish → KEV
- 113 d median(91)
- Last 90 days
- 2136 prev 414
Weakness classes
Products
- windows_10_1607 644
- Windows 10 Version 1607 481
- Microsoft 365 Apps for Enterprise 209
- windows_10 122
- 365_apps 115
- windows_10_1809 106
Worst active — by depth score
CVE-2025-53770Critical· 9.8Deserialization of untrusted data in on-premises Microsoft SharePoint Server allows an unauthorized attacker to execute code over a network. Microsoft is aware that an exploit for CVE-2025-53770 exists in the wild. Microsoft is preparing…100CVE-2021-38647Critical· 9.8Open Management Infrastructure (OMI) Remote Code Execution Vulnerability100CVE-2021-34473Critical· 9.1Microsoft Exchange Server Remote Code Execution Vulnerability100CVE-2021-26855Critical· 9.1Microsoft Exchange Server Remote Code Execution Vulnerability100CVE-2020-0796Critical· 10.0A remote code execution vulnerability exists in the way that the Microsoft Server Message Block 3.1.1 (SMBv3) protocol handles certain requests, aka 'Windows SMBv3 Client/Server Remote Code Execution Vulnerability'.100
microsoft vulnerabilities
CVEs affecting microsoft, newest first. Open any entry for full detail, references, and exploit status.
2953 CVEsRSS
CVE-2026-20928Medium· 4.6Windows Recovery Environment Security Feature Bypass Vulnerability
Improper removal of sensitive information before storage or transfer in Windows Recovery Environment Agent allows an unauthorized attacker to bypass a security feature with a physical attack.
CVE-2026-26152High· 7.0Microsoft Cryptographic Services Elevation of Privilege Vulnerability
Insecure storage of sensitive information in Windows Cryptographic Services allows an authorized attacker to elevate privileges locally.
CVE-2026-26143High· 7.8Microsoft PowerShell Security Feature Bypass Vulnerability
Improper input validation in Microsoft PowerShell allows an unauthorized attacker to bypass a security feature locally.
CVE-2026-23666High· 7.5.NET Framework Denial of Service Vulnerability
Improper input validation in .NET Framework allows an unauthorized attacker to deny service over a network.
CVE-2026-26159High· 7.8Remote Desktop Licensing Service Elevation of Privilege Vulnerability
Missing authentication for critical function in Windows Remote Desktop Licensing Service allows an authorized attacker to elevate privileges locally.
CVE-2026-26156High· 7.8Windows Hyper-V Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows Hyper-V allows an unauthorized attacker to execute code locally.
CVE-2026-26153High· 7.8Windows Encrypted File System (EFS) Elevation of Privilege Vulnerability
Out-of-bounds read in Windows Encrypting File System (EFS) allows an authorized attacker to elevate privileges locally.
CVE-2026-26173High· 7.0Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
CVE-2026-26169Medium· 6.1Windows Kernel Memory Information Disclosure Vulnerability
Buffer over-read in Windows Kernel Memory allows an authorized attacker to disclose information locally.
CVE-2026-26163High· 7.8Windows Kernel Elevation of Privilege Vulnerability
Double free in Windows Kernel allows an authorized attacker to elevate privileges locally.
CVE-2026-26177High· 7.0Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
CVE-2026-26176High· 7.8Windows Client Side Caching driver (csc.sys) Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Client Side Caching driver (csc.sys) allows an authorized attacker to elevate privileges locally.
CVE-2026-26170High· 7.8PowerShell Elevation of Privilege Vulnerability
Improper input validation in Microsoft PowerShell allows an authorized attacker to elevate privileges locally.
CVE-2026-26182High· 7.0Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
CVE-2026-26178High· 8.8Windows Advanced Rasterization Platform Elevation of Privilege Vulnerability
Integer size truncation in Windows Advanced Rasterization Platform (WARP) allows an unauthorized attacker to elevate privileges locally.
CVE-2026-26172High· 7.8Windows Push Notifications Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Push Notifications allows an authorized attacker to elevate privileges locally.
CVE-2026-27911High· 7.8Windows User Interface Core Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows User Interface Core allows an authorized attacker to elevate privileges locally.
CVE-2026-26184High· 7.8Windows Projected File System Elevation of Privilege Vulnerability
Buffer over-read in Windows Projected File System allows an authorized attacker to elevate privileges locally.
CVE-2026-27913High· 7.7Windows BitLocker Security Feature Bypass Vulnerability
Improper input validation in Windows BitLocker allows an unauthorized attacker to bypass a security feature locally.
CVE-2026-27910High· 7.8Windows Installer Elevation of Privilege Vulnerability
Improper handling of insufficient permissions or privileges in Windows Installer allows an authorized attacker to elevate privileges locally.
CVE-2026-27909High· 7.8Windows Search Service Elevation of Privilege Vulnerability
Use after free in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.
CVE-2026-27920High· 7.8Windows UPnP Device Host Elevation of Privilege Vulnerability
Untrusted pointer dereference in Windows Universal Plug and Play (UPnP) Device Host allows an authorized attacker to elevate privileges locally.
CVE-2026-27914High· 7.8Microsoft Management Console Elevation of Privilege Vulnerability
Improper access control in Microsoft Management Console allows an authorized attacker to elevate privileges locally.
CVE-2026-27912High· 8.0PoCWindows Kerberos Elevation of Privilege Vulnerability
Improper authorization in Windows Kerberos allows an authorized attacker to elevate privileges over an adjacent network.
CVE-2026-27928High· 8.7Windows Hello Security Feature Bypass Vulnerability
Improper input validation in Windows Hello allows an unauthorized attacker to bypass a security feature over a network.
CVE-2026-27922High· 7.0Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
CVE-2026-27916High· 7.8Windows UPnP Device Host Elevation of Privilege Vulnerability
Use after free in Windows Universal Plug and Play (UPnP) Device Host allows an authorized attacker to elevate privileges locally.
CVE-2026-27930Medium· 5.5Windows GDI Information Disclosure Vulnerability
Out-of-bounds read in Windows GDI allows an unauthorized attacker to disclose information locally.
CVE-2026-27925Medium· 6.5Windows UPnP Device Host Information Disclosure Vulnerability
Use after free in Windows Universal Plug and Play (UPnP) Device Host allows an unauthorized attacker to disclose information over an adjacent network.
CVE-2026-27923High· 7.8Desktop Window Manager Elevation of Privilege Vulnerability
Use after free in Desktop Window Manager allows an authorized attacker to elevate privileges locally.