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-2026-58629High· 7.0DirectX Graphics Kernel Elevation of Privilege Vulnerability
Use after free in Windows DirectX allows an authorized attacker to elevate privileges locally.
CVE-2026-58628High· 7.8Windows Wireless Network Manager Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Wireless Networking allows an authorized attacker to elevate privileges locally.
CVE-2026-56181High· 8.3Windows Network Address Translation (NAT) Spoofing Vulnerability
Origin validation error in Windows Network Address Translation (NAT) allows an unauthorized attacker to perform spoofing over an adjacent network.
CVE-2026-58529High· 7.1Windows Active Directory Federation Services (ADFS) Information Disclosure Vulnerability
Out-of-bounds read in Active Directory Federation Services (AD FS) allows an authorized attacker to disclose information over a network.
CVE-2026-50376Medium· 6.5Windows Remote Desktop Client Information Disclosure Vulnerability
Use of uninitialized resource in Windows RDP allows an unauthorized attacker to disclose information over a network.
CVE-2026-50696High· 7.5Heap-based buffer overflow in Windows Internet Key Exchange (IKE) Protocol allows an unauthorized attacker to deny service over a network.
Heap-based buffer overflow in Windows Internet Key Exchange (IKE) Protocol allows an unauthorized attacker to deny service over a network.
CVE-2026-50527High· 7.5.NET Framework Denial of Service Vulnerability
Stack-based buffer overflow in .NET Framework allows an unauthorized attacker to deny service over a network.
CVE-2026-47303High· 8.8ASP.NET Core Elevation of Privilege Vulnerability
Authentication bypass by assumed-immutable data in ASP.NET Core allows an authorized attacker to elevate privileges over a network.
CVE-2026-47300High· 8.8ASP.NET Core Elevation of Privilege Vulnerability
Incorrect implementation of authentication algorithm in ASP.NET Core allows an authorized attacker to elevate privileges over a network.
CVE-2026-50526High· 7.0.NET Tampering Vulnerability
Improper link resolution before file access ('link following') in .NET allows an authorized attacker to perform tampering locally.
CVE-2026-56170High· 7.5ASP.NET Core Denial of Service Vulnerability
Allocation of resources without limits or throttling in ASP.NET Core allows an unauthorized attacker to deny service over a network.
CVE-2026-47304High· 8.1.NET Security Feature Bypass Vulnerability
Improper verification of cryptographic signature in .NET allows an unauthorized attacker to bypass a security feature over a network.
CVE-2026-50648High· 7.5.NET Framework Denial of Service Vulnerability
Allocation of resources without limits or throttling in .NET Framework allows an unauthorized attacker to deny service over a network.
CVE-2026-50528High· 8.2.NET Security Feature Bypass Vulnerability
Incorrect authorization in .NET allows an unauthorized attacker to bypass a security feature over a network.
CVE-2026-50525High· 7.5.NET Denial of Service Vulnerability
Allocation of resources without limits or throttling in .NET allows an unauthorized attacker to deny service over a network.
CVE-2026-50659Medium· 6.5Improper encoding or escaping of output in .NET allows an authorized attacker to perform spoofing over a network.
Improper encoding or escaping of output in .NET allows an authorized attacker to perform spoofing over a network.
CVE-2026-47302High· 7.5.NET Denial of Service Vulnerability
Allocation of resources without limits or throttling in .NET allows an unauthorized attacker to deny service over a network.
CVE-2026-49791High· 7.1Improper link resolution before file access ('link following') in Windows Routing and Remote Access Service (RRAS) allows an authorized attacker to elevate privileges locally.
Improper link resolution before file access ('link following') in Windows Routing and Remote Access Service (RRAS) allows an authorized attacker to elevate privileges locally.
CVE-2026-57094High· 8.8Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code over a network.
Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code over a network.
CVE-2026-57093High· 7.0Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
CVE-2026-57092Critical· 9.9Use after free in Windows VMSwitch allows an authorized attacker to elevate privileges over a network.
Use after free in Windows VMSwitch allows an authorized attacker to elevate privileges over a network.
CVE-2026-57091High· 7.8Stack-based buffer overflow in Windows File History Service allows an authorized attacker to elevate privileges locally.
Stack-based buffer overflow in Windows File History Service allows an authorized attacker to elevate privileges locally.
CVE-2026-57090High· 8.8Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code over a network.
Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code over a network.
CVE-2026-57089High· 7.5Use after free in Windows SMB Server Network Transport Driver (srvnet.sys) allows an unauthorized attacker to execute code over a network.
Use after free in Windows SMB Server Network Transport Driver (srvnet.sys) allows an unauthorized attacker to execute code over a network.
CVE-2026-57088High· 7.8Improper access control in Extensible Storage Engine (ESENT) allows an authorized attacker to elevate privileges locally.
Improper access control in Extensible Storage Engine (ESENT) allows an authorized attacker to elevate privileges locally.
CVE-2026-57087High· 8.8Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code over a network.
Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code over a network.
CVE-2026-57085Medium· 5.5Out-of-bounds read in Windows Print Spooler Components allows an authorized attacker to disclose information locally.
Out-of-bounds read in Windows Print Spooler Components allows an authorized attacker to disclose information locally.
CVE-2026-57084Medium· 5.5Use of uninitialized resource in Windows File Explorer allows an unauthorized attacker to disclose information locally.
Use of uninitialized resource in Windows File Explorer allows an unauthorized attacker to disclose information locally.
CVE-2026-57083Medium· 5.5Use of uninitialized resource in Microsoft Windows Codecs Library allows an unauthorized attacker to disclose information locally.
Use of uninitialized resource in Microsoft Windows Codecs Library allows an unauthorized attacker to disclose information locally.
CVE-2026-56650High· 7.8Heap-based buffer overflow in Windows Network File System allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows Network File System allows an authorized attacker to elevate privileges locally.