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-2021-34496Medium· 5.5Windows GDI Information Disclosure Vulnerability
Windows GDI Information Disclosure Vulnerability
CVE-2021-34494High· 8.8Windows DNS Server Remote Code Execution Vulnerability
Windows DNS Server Remote Code Execution Vulnerability
CVE-2021-34493Medium· 6.7Windows Partition Management Driver Elevation of Privilege Vulnerability
Windows Partition Management Driver Elevation of Privilege Vulnerability
CVE-2021-34492High· 8.1Windows Certificate Spoofing Vulnerability
Windows Certificate Spoofing Vulnerability
CVE-2021-34491Medium· 5.5Win32k Information Disclosure Vulnerability
Win32k Information Disclosure Vulnerability
CVE-2021-34490High· 7.5Windows TCP/IP Driver Denial of Service Vulnerability
Windows TCP/IP Driver Denial of Service Vulnerability
CVE-2021-34489High· 7.8DirectWrite Remote Code Execution Vulnerability
DirectWrite Remote Code Execution Vulnerability
CVE-2021-34488High· 7.8Windows Console Driver Elevation of Privilege Vulnerability
Windows Console Driver Elevation of Privilege Vulnerability
CVE-2021-34479High· 7.8Microsoft Visual Studio Spoofing Vulnerability
Microsoft Visual Studio Spoofing Vulnerability
CVE-2021-34477High· 7.8Visual Studio Code .NET Runtime Elevation of Privilege Vulnerability
Visual Studio Code .NET Runtime Elevation of Privilege Vulnerability
CVE-2021-34476High· 7.5Bowser.sys Denial of Service Vulnerability
Bowser.sys Denial of Service Vulnerability
CVE-2021-34474High· 8.0Microsoft Dynamics 365 Business Central Remote Code Execution Vulnerability
Microsoft Dynamics 365 Business Central Remote Code Execution Vulnerability
CVE-2021-34473Critical· 9.1CISA KEV0dayPoCMicrosoft Exchange Server Remote Code Execution Vulnerability
Microsoft Exchange Server Remote Code Execution Vulnerability
CVE-2021-34470High· 8.0PoCMicrosoft Exchange Server Elevation of Privilege Vulnerability
Microsoft Exchange Server Elevation of Privilege Vulnerability
CVE-2021-34469High· 8.2Microsoft Office Security Feature Bypass Vulnerability
Microsoft Office Security Feature Bypass Vulnerability
CVE-2021-34468High· 7.10dayMicrosoft SharePoint Server Remote Code Execution Vulnerability
Microsoft SharePoint Server Remote Code Execution Vulnerability
CVE-2021-33788High· 7.5Windows LSA Denial of Service Vulnerability
Windows LSA Denial of Service Vulnerability
CVE-2021-33786High· 8.1Windows LSA Security Feature Bypass Vulnerability
Windows LSA Security Feature Bypass Vulnerability
CVE-2021-33785High· 7.5Windows AF_UNIX Socket Provider Denial of Service Vulnerability
Windows AF_UNIX Socket Provider Denial of Service Vulnerability
CVE-2021-33784High· 7.8Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability
Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability
CVE-2021-33783Medium· 6.5Windows SMB Information Disclosure Vulnerability
Windows SMB Information Disclosure Vulnerability
CVE-2021-33782Medium· 5.5Windows Authenticode Spoofing Vulnerability
Windows Authenticode Spoofing Vulnerability
CVE-2021-33781High· 8.1Azure AD Security Feature Bypass Vulnerability
Azure AD Security Feature Bypass Vulnerability
CVE-2021-33780High· 8.8Windows DNS Server Remote Code Execution Vulnerability
Windows DNS Server Remote Code Execution Vulnerability
CVE-2021-33779High· 8.1Windows AD FS Security Feature Bypass Vulnerability
Windows AD FS Security Feature Bypass Vulnerability
CVE-2021-33778High· 7.8HEVC Video Extensions Remote Code Execution Vulnerability
HEVC Video Extensions Remote Code Execution Vulnerability
CVE-2021-33777High· 7.8HEVC Video Extensions Remote Code Execution Vulnerability
HEVC Video Extensions Remote Code Execution Vulnerability
CVE-2021-33776High· 7.8HEVC Video Extensions Remote Code Execution Vulnerability
HEVC Video Extensions Remote Code Execution Vulnerability
CVE-2021-33775High· 7.8HEVC Video Extensions Remote Code Execution Vulnerability
HEVC Video Extensions Remote Code Execution Vulnerability
CVE-2021-33774High· 7.0Windows Event Tracing Elevation of Privilege Vulnerability
Windows Event Tracing Elevation of Privilege Vulnerability