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

1225/120126/010226/020326/030426/040526/050626/060726/070826/080926/091026/101126/11

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

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4599

Total CVEs

273

Critical

CISA KEV

Exploited

Worst active — by depth score

Microsoft vulnerabilities

CVEs affecting Microsoft, newest first. Open any entry for full detail, references, and exploit status.

4599 CVEsRSS

CVEs per month

Weakness classes

Products

Worst active — by depth score

Microsoft vulnerabilities

Untrusted pointer dereference in Windows Kernel allows an authorized attacker to deny service over a network.

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Connected Devices Platform Service 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.

Access of resource using incompatible type ('type confusion') in DNS Server allows an authorized attacker to execute code over a network.

Out-of-bounds read in Windows DNS allows an authorized attacker to deny service over a network.

Improper link resolution before file access ('link following') in .NET allows an authorized attacker to elevate privileges locally.

Use after free in Windows TCP/IP allows an authorized attacker to elevate privileges locally.

Allocation of resources without limits or throttling in OpenSSH for Windows allows an unauthorized attacker to deny service over a network.

A denial of service vulnerability exists when Microsoft Common Object Runtime Library improperly handles web requests

Improper limitation of a pathname to a restricted directory ('path traversal') in .NET allows an authorized attacker to elevate privileges locally.

Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.

Allocation of resources without limits or throttling in ASP.NET Core allows an unauthorized attacker to deny service over a network.

Remote Code Execution in Windows Routing and Remote Access Service (RRAS) allows attacker to gain an unauthorized access to victim's machine

Heap-based buffer overflow in Windows System Information Console allows an unauthorized attacker to execute code over a network.

Use after free in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.

Missing release of memory after effective lifetime in Windows DNS allows an unauthorized attacker to deny service over a network.

Heap-based buffer overflow in Microsoft PostScript Printer Driver allows an unauthorized attacker to execute code over a network.

Use after free in Windows Direct Composition allows an authorized attacker to elevate privileges locally.

Use after free in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.

Exposure of sensitive information to an unauthorized actor in Windows Client Side Caching driver (csc.sys) allows an authorized attacker to disclose information locally.

Improper authorization in Windows Broadcast DVR User Service allows an authorized attacker to disclose information locally.

Heap-based buffer overflow in Microsoft PostScript Printer Driver allows an unauthorized attacker to execute code over a network.

Use after free in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.

Heap-based buffer overflow in Windows Network File System allows an authorized attacker to execute code locally.

Untrusted search path in Windows Update Service allows an authorized attacker to elevate privileges locally.

Out-of-bounds read in Microsoft Windows Search Component allows an authorized attacker to disclose information locally.

Use after free in Windows Audio Service allows an authorized attacker to elevate privileges locally.

Heap-based buffer overflow in Windows Update Service allows an authorized attacker to elevate privileges locally.

Heap-based buffer overflow in Windows OLE allows an authorized attacker to elevate privileges locally.

Improper access control in Windows Remote Access Connection Manager allows an authorized attacker to disclose information locally.