Microsoft has 4,599 CVEs on record between 2012 and 2026. Disclosure cadence is accelerating: 2930 in the last 90 days against 932 in the 90 before. The busiest recent month was October 2026 with 1482. The median CVSS is 7.8 (high), with 273 rated critical. 2% have been exploited in the wild, in line with the corpus average. The median gap from publication to a KEV listing is 112 days (95 cases). The dominant weakness classes are CWE-122 (931) and CWE-416 (851). Most affected products: windows_10_1607 (988), Windows 10 Version 1607 (877), 365_apps (267).
CVEs per month
Last 12 months, by publish date
- Exploited share
- 2% vs 1% corpus
- Median CVSS
- 7.8
- Publish → KEV
- 112 d median(95)
- Last 90 days
- 2930 prev 932
Weakness classes
Products
- windows_10_1607 988
- Windows 10 Version 1607 877
- 365_apps 267
- Microsoft 365 Apps for Enterprise 232
- Windows 10 Version 1809 199
- windows_10_1809 174
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.
4599 CVEsRSS
CVE-2026-50404High· 7.0Windows Media Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Media allows an authorized attacker to elevate privileges locally.
CVE-2026-50403High· 7.0Windows Runtime Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Runtime allows an authorized attacker to elevate privileges locally.
CVE-2026-50398High· 8.8Windows Media Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Media allows an authorized attacker to elevate privileges over a network.
CVE-2026-50388High· 7.8Windows NTFS Remote Code Execution Vulnerability
Out-of-bounds read in Windows NTFS allows an unauthorized attacker to execute code locally.
CVE-2026-50375Medium· 6.3DirectX Graphics Kernel Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows DirectX allows an authorized attacker to elevate privileges locally.
CVE-2026-50373High· 7.8Windows Search Service Elevation of Privilege Vulnerability
Improper access control in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.
CVE-2026-50371High· 7.0Windows LUA File Virtualization Filter Driver Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows LUAFV allows an authorized attacker to elevate privileges locally.
CVE-2026-50366Medium· 6.5Windows Active Directory Domain Services Denial of Service Vulnerability
Null pointer dereference in Active Directory Domain Services allows an authorized attacker to deny service over a network.
CVE-2026-50361High· 7.8Microsoft Brokering File System Elevation of Privilege Vulnerability
Double free in Microsoft Brokering File System allows an authorized attacker to elevate privileges locally.
CVE-2026-50358High· 7.0Windows Media Elevation of Privilege Vulnerability
Use after free in Windows Media allows an authorized attacker to elevate privileges locally.
CVE-2026-50353High· 7.8DirectX Graphics Kernel Elevation of Privilege Vulnerability
Use after free in Windows DirectX allows an authorized attacker to elevate privileges locally.
CVE-2026-50340High· 8.5Windows Runtime Elevation of Privilege Vulnerability
Use after free in Windows Runtime allows an authorized attacker to elevate privileges over a network.
CVE-2026-50336High· 7.8Windows Media Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Media allows an authorized attacker to elevate privileges locally.
CVE-2026-50317High· 7.8Windows Operating Systems Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Operating Systems allows an authorized attacker to elevate privileges locally.
CVE-2026-50471High· 7.8Windows NTFS Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to execute code locally.
CVE-2026-50469High· 7.8Windows Projected File System Elevation of Privilege Vulnerability
Improper link resolution before file access ('link following') in Windows Projected File System allows an authorized attacker to elevate privileges locally.
CVE-2026-50463High· 7.5Windows Kernel Information Disclosure Vulnerability
Out-of-bounds read in Windows Kernel allows an unauthorized attacker to disclose information over a network.
CVE-2026-50448High· 7.8Windows NTFS Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to execute code locally.
CVE-2026-50445Medium· 6.5Windows Remote Desktop Protocol (RDP) Information Disclosure Vulnerability
Buffer over-read in Windows RDP allows an unauthorized attacker to disclose information over a network.
CVE-2026-50437Medium· 5.5Windows DWM Core Library Information Disclosure Vulnerability
Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to disclose information locally.
CVE-2026-50436High· 7.8Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
CVE-2026-50433High· 7.8Windows Media Elevation of Privilege Vulnerability
Use after free in Windows Media allows an authorized attacker to elevate privileges locally.
CVE-2026-50423High· 7.8Windows Kernel Elevation of Privilege Vulnerability
Improper access control in Windows Kernel allows an authorized attacker to elevate privileges locally.
CVE-2026-50422High· 7.8Windows NTFS Elevation of Privilege Vulnerability
Out-of-bounds read in Windows NTFS allows an authorized attacker to elevate privileges locally.
CVE-2026-50421High· 7.8Windows Connected User Experiences and Telemetry Elevation of Privilege Vulnerability
Access of resource using incompatible type ('type confusion') in Windows Connected User Experiences and Telemetry allows an authorized attacker to elevate privileges locally.
CVE-2026-50418Medium· 5.1Windows System Secure Feature Bypass Vulnerability
Improper access control in Windows System allows an unauthorized attacker to bypass a security feature locally.
CVE-2026-50405High· 7.8Windows Filtering Platform Elevation of Privilege Vulnerability
Insufficient granularity of access control in Windows Filtering Platform (WFP) allows an authorized attacker to elevate privileges locally.
CVE-2026-50401Medium· 5.5Windows Cloud Files Mini Filter Driver Information Disclosure Vulnerability
Out-of-bounds read in Windows Cloud Files Mini Filter Driver allows an authorized attacker to disclose information locally.
CVE-2026-50397High· 7.0Windows Kernel Elevation of Privilege Vulnerability
Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
CVE-2026-50391High· 7.8Windows Group Policy Elevation of Privilege Vulnerability
Improper privilege management in Windows Group Policy allows an authorized attacker to elevate privileges locally.