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-2021-33760Medium· 5.5Media Foundation Information Disclosure Vulnerability
Media Foundation Information Disclosure Vulnerability
CVE-2021-33759High· 7.8Windows Desktop Bridge Elevation of Privilege Vulnerability
Windows Desktop Bridge Elevation of Privilege Vulnerability
CVE-2021-33758High· 7.7Windows Hyper-V Denial of Service Vulnerability
Windows Hyper-V Denial of Service Vulnerability
CVE-2021-33757Medium· 5.3Windows Security Account Manager Remote Protocol Security Feature Bypass Vulnerability
Windows Security Account Manager Remote Protocol Security Feature Bypass Vulnerability
CVE-2021-33756High· 8.8Windows DNS Snap-in Remote Code Execution Vulnerability
Windows DNS Snap-in Remote Code Execution Vulnerability
CVE-2021-33755Medium· 6.3Windows Hyper-V Denial of Service Vulnerability
Windows Hyper-V Denial of Service Vulnerability
CVE-2021-33754High· 8.0Windows DNS Server Remote Code Execution Vulnerability
Windows DNS Server Remote Code Execution Vulnerability
CVE-2021-33753Medium· 4.7Microsoft Bing Search Spoofing Vulnerability
Microsoft Bing Search Spoofing Vulnerability
CVE-2021-33752High· 8.8Windows DNS Snap-in Remote Code Execution Vulnerability
Windows DNS Snap-in Remote Code Execution Vulnerability
CVE-2021-33751High· 7.00dayWindows Storage Spaces Controller Elevation of Privilege Vulnerability
Windows Storage Spaces Controller Elevation of Privilege Vulnerability
CVE-2021-33750High· 8.8Windows DNS Snap-in Remote Code Execution Vulnerability
Windows DNS Snap-in Remote Code Execution Vulnerability
CVE-2021-33749High· 8.8Windows DNS Snap-in Remote Code Execution Vulnerability
Windows DNS Snap-in Remote Code Execution Vulnerability
CVE-2021-33746High· 8.0Windows DNS Server Remote Code Execution Vulnerability
Windows DNS Server Remote Code Execution Vulnerability
CVE-2021-33745Medium· 6.5Windows DNS Server Denial of Service Vulnerability
Windows DNS Server Denial of Service Vulnerability
CVE-2021-33744Medium· 5.3Windows Secure Kernel Mode Security Feature Bypass Vulnerability
Windows Secure Kernel Mode Security Feature Bypass Vulnerability
CVE-2021-33743High· 7.8Windows Projected File System Elevation of Privilege Vulnerability
Windows Projected File System Elevation of Privilege Vulnerability
CVE-2021-33740High· 7.8Windows Media Remote Code Execution Vulnerability
Windows Media Remote Code Execution Vulnerability
CVE-2021-31984High· 7.6Power BI Remote Code Execution Vulnerability
Power BI Remote Code Execution Vulnerability
CVE-2021-31979High· 7.8CISA KEV0dayPoCWindows Kernel Elevation of Privilege Vulnerability
Windows Kernel Elevation of Privilege Vulnerability
CVE-2021-31961Medium· 6.10dayWindows InstallService Elevation of Privilege Vulnerability
Windows InstallService Elevation of Privilege Vulnerability
CVE-2021-31947High· 7.8HEVC Video Extensions Remote Code Execution Vulnerability
HEVC Video Extensions Remote Code Execution Vulnerability
CVE-2021-31206High· 7.6⚠ Exploited0dayMicrosoft Exchange Server Remote Code Execution Vulnerability
Microsoft Exchange Server Remote Code Execution Vulnerability
CVE-2021-31196High· 7.2CISA KEVMicrosoft Exchange Server Remote Code Execution Vulnerability
Microsoft Exchange Server Remote Code Execution Vulnerability
CVE-2021-31183High· 7.5Windows TCP/IP Driver Denial of Service Vulnerability
Windows TCP/IP Driver Denial of Service Vulnerability
CVE-2021-34527High· 8.8CISA KEVPoCA remote code execution vulnerability exists when the Windows Print Spooler service improperly performs privileged file operations
A remote code execution vulnerability exists when the Windows Print Spooler service improperly performs privileged file operations. An attacker who successfully exploited this vulnerability could run arbitrary code with SYSTEM privileges…
CVE-2021-31957Medium· 5.9ASP.NET Core Denial of Service Vulnerability
ASP.NET Core Denial of Service Vulnerability
CVE-2021-1675High· 7.8CISA KEVPoCWindows Print Spooler Remote Code Execution Vulnerability
Windows Print Spooler Remote Code Execution Vulnerability
CVE-2021-31204High· 7.3.NET and Visual Studio Elevation of Privilege Vulnerability
.NET and Visual Studio Elevation of Privilege Vulnerability
CVE-2021-27085High· 8.8CISA KEVInternet Explorer Remote Code Execution Vulnerability
Internet Explorer Remote Code Execution Vulnerability
CVE-2021-27059High· 7.6CISA KEVMicrosoft Office Remote Code Execution Vulnerability
Microsoft Office Remote Code Execution Vulnerability