Microsoft has 4,598 CVEs on record between 2012 and 2026. Disclosure cadence is accelerating: 2929 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 272 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
- 2929 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.
4598 CVEsRSS
CVE-2026-96249High· 7.8Use 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-2026-96248High· 7.5Stack-based buffer overflow in Windows Host Guardian Service allows an unauthorized attacker to deny service over a network.
Stack-based buffer overflow in Windows Host Guardian Service allows an unauthorized attacker to deny service over a network.
CVE-2026-96247Medium· 5.5Use of uninitialized resource in Windows Kernel-Mode Drivers allows an authorized attacker to disclose information locally.
Use of uninitialized resource in Windows Kernel-Mode Drivers allows an authorized attacker to disclose information locally.
CVE-2026-96246High· 7.5Out-of-bounds read in Network Policy Server (NPS) allows an unauthorized attacker to disclose information over a network.
Out-of-bounds read in Network Policy Server (NPS) allows an unauthorized attacker to disclose information over a network.
CVE-2026-96245High· 7.5Out-of-bounds read in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to disclose information over a network.
Out-of-bounds read in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to disclose information over a network.
CVE-2026-96244High· 7.8Use after free in Windows Internal System User Profile allows an authorized attacker to elevate privileges locally.
Use after free in Windows Internal System User Profile allows an authorized attacker to elevate privileges locally.
CVE-2026-96243High· 7.8Improper link resolution before file access ('link following') in Windows WalletService allows an authorized attacker to elevate privileges locally.
Improper link resolution before file access ('link following') in Windows WalletService allows an authorized attacker to elevate privileges locally.
CVE-2026-96238Medium· 6.5Origin validation error in .NET allows an unauthorized attacker to bypass a security feature over a network.
Origin validation error in .NET allows an unauthorized attacker to bypass a security feature over a network.
CVE-2026-96237High· 7.5Inclusion of functionality from untrusted control sphere in .NET allows an unauthorized attacker to execute code over a network.
Inclusion of functionality from untrusted control sphere in .NET allows an unauthorized attacker to execute code over a network.
CVE-2026-96236High· 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-2026-96235High· 8.8Out-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-2026-96234Medium· 5.3Origin validation error in .NET allows an unauthorized attacker to disclose information over a network.
Origin validation error in .NET allows an unauthorized attacker to disclose information over a network.
CVE-2026-96233High· 7.5Out-of-bounds write in ASP.NET Core allows an unauthorized attacker to deny service over a network.
Out-of-bounds write in ASP.NET Core allows an unauthorized attacker to deny service over a network.
CVE-2026-96232High· 7.5Out-of-bounds read in .NET allows an unauthorized attacker to disclose information over a network.
Out-of-bounds read in .NET allows an unauthorized attacker to disclose information over a network.
CVE-2026-96231High· 7.8Improper 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-2026-96230High· 8.8PoCImproper neutralization of input during web page generation ('cross-site scripting') in ASP.NET Core allows an unauthorized attacker to execute code over a network.
Improper neutralization of input during web page generation ('cross-site scripting') in ASP.NET Core allows an unauthorized attacker to execute code over a network.
CVE-2026-96229Medium· 6.5Permissive list of allowed inputs in .NET allows an unauthorized attacker to disclose information over a network.
Permissive list of allowed inputs in .NET allows an unauthorized attacker to disclose information over a network.
CVE-2026-96225High· 7.8Improper 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-2026-96224High· 8.8Out-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-2026-96223High· 7.8Use after free in Windows Hyper-V allows an authorized attacker to elevate privileges locally.
Use after free in Windows Hyper-V allows an authorized attacker to elevate privileges locally.
CVE-2026-96220High· 7.8Improper control of generation of code ('code injection') in Windows Assigned Access allows an authorized attacker to elevate privileges locally.
Improper control of generation of code ('code injection') in Windows Assigned Access allows an authorized attacker to elevate privileges locally.
CVE-2026-96219Critical· 9.8Out-of-bounds write in Windows Local Security Authority Subsystem Service (LSASS) allows an unauthorized attacker to execute code over a network.
Out-of-bounds write in Windows Local Security Authority Subsystem Service (LSASS) allows an unauthorized attacker to execute code over a network.
CVE-2026-96218Medium· 5.5Improper access control in Windows Update Stack allows an authorized attacker to perform tampering locally.
Improper access control in Windows Update Stack allows an authorized attacker to perform tampering locally.
CVE-2026-96217High· 7.8Heap-based buffer overflow in Windows NTFS allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows NTFS allows an authorized attacker to elevate privileges locally.
CVE-2026-96216High· 7.0Use 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-2026-96215High· 7.0Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Autopilot allows an authorized attacker to elevate privileges locally.
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Autopilot allows an authorized attacker to elevate privileges locally.
CVE-2026-96209High· 7.0Out-of-bounds read in Windows Network File System allows an authorized attacker to elevate privileges locally.
Out-of-bounds read in Windows Network File System allows an authorized attacker to elevate privileges locally.
CVE-2026-96206Medium· 6.5Use of uninitialized resource in Windows Subsystem for Linux allows an authorized attacker to disclose information locally.
Use of uninitialized resource in Windows Subsystem for Linux allows an authorized attacker to disclose information locally.
CVE-2026-96204Medium· 6.5Server-side request forgery (ssrf) in Azure Arc allows an authorized attacker to elevate privileges over a network.
Server-side request forgery (ssrf) in Azure Arc allows an authorized attacker to elevate privileges over a network.
CVE-2026-96202High· 8.8Heap-based buffer overflow in Windows Raw Image Extension allows an unauthorized attacker to execute code over a network.
Heap-based buffer overflow in Windows Raw Image Extension allows an unauthorized attacker to execute code over a network.