microsoft has 4,599 CVEs on record between 2012 and 2026. Disclosure cadence is accelerating: 2930 in the last 90 days against 934 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 934
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-2026-70211Medium· 5.5Out-of-bounds read in Windows Win32 Kernel Subsystem allows an authorized attacker to disclose information locally.
Out-of-bounds read in Windows Win32 Kernel Subsystem allows an authorized attacker to disclose information locally.
CVE-2026-70210High· 8.8Heap-based buffer overflow in Windows OLE DB allows an unauthorized attacker to elevate privileges over a network.
Heap-based buffer overflow in Windows OLE DB allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-70209High· 7.0Use after free in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.
Use after free in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.
CVE-2026-70208Medium· 5.5Out-of-bounds read in Windows HTTP.sys allows an authorized attacker to disclose information locally.
Out-of-bounds read in Windows HTTP.sys allows an authorized attacker to disclose information locally.
CVE-2026-70207High· 7.5Heap-based buffer overflow in Network Policy Server (NPS) allows an authorized attacker to execute code over a network.
Heap-based buffer overflow in Network Policy Server (NPS) allows an authorized attacker to execute code over a network.
CVE-2026-70206Medium· 6.5Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.
Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.
CVE-2026-70205High· 7.0Access of resource using incompatible type ('type confusion') in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
Access of resource using incompatible type ('type confusion') in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
CVE-2026-70202High· 7.5Server-side request forgery (ssrf) in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.
Server-side request forgery (ssrf) in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.
CVE-2026-70201Medium· 5.5Out-of-bounds read in Windows DHCP Server allows an authorized attacker to deny service locally.
Out-of-bounds read in Windows DHCP Server allows an authorized attacker to deny service locally.
CVE-2026-70199Medium· 5.5Exposure of sensitive system information to an unauthorized control sphere in Windows Kernel allows an authorized attacker to disclose information locally.
Exposure of sensitive system information to an unauthorized control sphere in Windows Kernel allows an authorized attacker to disclose information locally.
CVE-2026-70198High· 7.0Use after free in Windows Push Notifications allows an authorized attacker to elevate privileges locally.
Use after free in Windows Push Notifications allows an authorized attacker to elevate privileges locally.
CVE-2026-70197High· 8.1Out-of-bounds write in .NET allows an unauthorized attacker to execute code over a network.
Out-of-bounds write in .NET allows an unauthorized attacker to execute code over a network.
CVE-2026-70196Medium· 5.9Inefficient algorithmic complexity in ASP.NET Core allows an unauthorized attacker to deny service over a network.
Inefficient algorithmic complexity in ASP.NET Core allows an unauthorized attacker to deny service over a network.
CVE-2026-70195Medium· 4.7Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to disclose information locally.
Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to disclose information locally.
CVE-2026-70194Medium· 6.5Improper certificate validation in .NET Framework allows an unauthorized attacker to bypass a security feature over a network.
Improper certificate validation in .NET Framework allows an unauthorized attacker to bypass a security feature over a network.
CVE-2026-70190High· 7.3Improper link resolution before file access ('link following') in .NET allows an authorized attacker to elevate privileges locally.
Improper link resolution before file access ('link following') in .NET allows an authorized attacker to elevate privileges locally.
CVE-2026-70188Critical· 9.1Inconsistent interpretation of http requests ('http request/response smuggling') in ASP.NET Core allows an unauthorized attacker to bypass a security feature over a network.
Inconsistent interpretation of http requests ('http request/response smuggling') in ASP.NET Core allows an unauthorized attacker to bypass a security feature over a network.
CVE-2026-70187High· 8.1Use after free in Remote Desktop Gateway Service allows an unauthorized attacker to execute code over a network.
Use after free in Remote Desktop Gateway Service allows an unauthorized attacker to execute code over a network.
CVE-2026-70186High· 7.5Deadlock in ASP.NET Core allows an unauthorized attacker to deny service over a network.
Deadlock in ASP.NET Core allows an unauthorized attacker to deny service over a network.
CVE-2026-70185High· 8.8Protection mechanism failure in Windows PowerShell allows an authorized attacker to bypass a security feature locally.
Protection mechanism failure in Windows PowerShell allows an authorized attacker to bypass a security feature locally.
CVE-2026-70184High· 7.8Improper resolution of path equivalence in Windows Backup Engine allows an authorized attacker to elevate privileges locally.
Improper resolution of path equivalence in Windows Backup Engine allows an authorized attacker to elevate privileges locally.
CVE-2026-70183High· 7.5Concurrent execution using shared resource with improper synchronization ('race condition') in ASP.NET Core allows an authorized attacker to elevate privileges over a network.
Concurrent execution using shared resource with improper synchronization ('race condition') in ASP.NET Core allows an authorized attacker to elevate privileges over a network.
CVE-2026-70181High· 7.5Allocation of resources without limits or throttling in ASP.NET Core allows an unauthorized attacker to deny service over a network.
Allocation of resources without limits or throttling in ASP.NET Core allows an unauthorized attacker to deny service over a network.
CVE-2026-70179High· 7.5Authentication bypass by spoofing in ASP.NET Core allows an authorized attacker to elevate privileges over a network.
Authentication bypass by spoofing in ASP.NET Core allows an authorized attacker to elevate privileges over a network.
CVE-2026-70177High· 7.8Numeric truncation error in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.
Numeric truncation error in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.
CVE-2026-70176High· 7.0Use after free in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.
Use after free in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.
CVE-2026-70175High· 8.1Improper authentication in ASP.NET Core allows an unauthorized attacker to elevate privileges over a network.
Improper authentication in ASP.NET Core allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-70174High· 8.8Improperly implemented security check for standard in .NET allows an unauthorized attacker to execute code over a network.
Improperly implemented security check for standard in .NET allows an unauthorized attacker to execute code over a network.
CVE-2026-70173Medium· 5.5Out-of-bounds read in Microsoft Windows Search Component allows an authorized attacker to disclose information locally.
Out-of-bounds read in Microsoft Windows Search Component allows an authorized attacker to disclose information locally.
CVE-2026-70172High· 7.8Untrusted pointer dereference in Windows NTFS allows an authorized attacker to elevate privileges locally.
Untrusted pointer dereference in Windows NTFS allows an authorized attacker to elevate privileges locally.