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

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: 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

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4598

Total CVEs

272

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.

4598 CVEsRSS

CVEs per month

Weakness classes

Products

Worst active — by depth score

Microsoft vulnerabilities

Use after free in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.

Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.

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

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

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

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

Heap-based buffer overflow in Windows Background Intelligent Transfer Service (BITS) 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 Web Account Manager allows an authorized attacker to elevate privileges locally.

Use of uninitialized resource in Windows Background Intelligent Transfer Service (BITS) allows an authorized attacker to elevate privileges locally.

Use of externally-controlled format string in Windows Image Acquisition allows an authorized attacker to elevate privileges locally.

Use after free in Windows DHCP Server allows an authorized attacker to execute code over a network.

Files or directories accessible to external parties in Windows Event Viewer allows an authorized attacker to disclose information over a network.

Out-of-bounds read 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.

Buffer over-read in Servicing Stack Updates allows an authorized attacker to disclose information locally.

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

Use after free in Windows Modern Device Management (MDM) allows an authorized attacker to elevate privileges locally.

Heap-based buffer overflow in Windows Background Intelligent Transfer Service (BITS) allows an authorized attacker to elevate privileges locally.

Heap-based buffer overflow in Windows Biometric Service allows an authorized attacker to disclose information locally.

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

Double free in Windows Wired AutoConfig Service allows an authorized attacker to elevate privileges locally.

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

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

Out-of-bounds write in Windows Fast FAT Driver allows an authorized attacker to elevate privileges locally.

Use after free in Windows Universal Disk Format File System Driver (UDFS) allows an authorized attacker to elevate privileges locally.

Use after free in Windows Composite Image File System allows an authorized attacker to elevate privileges locally.

Use after free in Windows Composite Image File System allows an authorized attacker to elevate privileges locally.

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

Out-of-bounds read in Windows Universal Disk Format File System Driver (UDFS) allows an authorized attacker to disclose information locally.