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

Weak authentication in Windows Print Spooler Components allows an authorized attacker to elevate privileges locally.

Use after free in Windows Universal Plug and Play (UPnP) Device Host allows an authorized attacker to elevate privileges locally.

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

Heap-based buffer overflow in Windows Universal Plug and Play (UPnP) Device Host allows an authorized attacker to elevate privileges locally.

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

Use after free in Network Policy Server (NPS) allows an unauthorized attacker to execute code over a network.

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

Out-of-bounds read in Windows Hyper-V allows an authorized attacker to elevate privileges locally.

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

Use after free in Windows Cash Drawer Protocol Provider allows an authorized attacker to elevate privileges locally.

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

Heap-based buffer overflow in Servicing Stack Updates allows an authorized attacker to elevate privileges locally.

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

Integer overflow or wraparound in .NET Framework allows an unauthorized attacker to elevate privileges over a network.

Release of invalid pointer or reference in Windows Management Instrumentation allows an authorized attacker to elevate privileges locally.

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

Improper control of generation of code ('code injection') in Windows Performance Monitor allows an authorized attacker to elevate privileges locally.

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

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Phone Service allows an authorized attacker to elevate privileges locally.

Out-of-bounds read in Windows Volume Manager Extension Driver allows an authorized attacker to elevate privileges locally.

Inclusion of functionality from untrusted control sphere in Windows Common Log File System Driver allows an authorized attacker to elevate privileges locally.

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

Out-of-bounds read in Windows Print Spooler Components allows an unauthorized attacker to disclose information over a network.

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

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

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

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

Use after free in Microsoft Office Click-To-Run allows an authorized attacker to elevate privileges locally.

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

Out-of-bounds read in Microsoft Graphics Component allows an authorized attacker to elevate privileges locally.