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

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 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

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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

Heap-based buffer overflow in Volume Manager Driver allows an authorized attacker to elevate privileges over a network.

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.

Buffer over-read in Windows DHCP Server allows an authorized attacker to deny service over an adjacent network.

Missing authentication for critical function in Windows DHCP Server allows an authorized attacker to elevate privileges over a network.

Use after free in Windows USB Audio Class driver (usbaudio.sys) allows an authorized attacker to elevate privileges locally.

Stack-based buffer overflow in Windows DHCP Server allows an authorized attacker to execute code over an adjacent network.

Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally.

Execution with unnecessary privileges in Microsoft Office SharePoint allows an authorized attacker to disclose information over a network.

Integer overflow or wraparound in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code over a network.

Integer overflow or wraparound in Volume Manager Driver allows an authorized attacker to elevate privileges locally.

Exposure of sensitive system information to an unauthorized control sphere in Windows Kernel allows an authorized attacker to disclose information locally.

Missing release of memory after effective lifetime in Windows DHCP Server allows an authorized attacker to deny service over an adjacent network.

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

Missing authorization in Windows SMB Server allows an authorized attacker to disclose information locally.

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.

Use after free in Audio Video Control Transport Protocol allows an authorized attacker to elevate privileges locally.

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

Use after free in OpenSSH for Windows allows an unauthorized attacker to execute code over a network.

Use after free in Windows NDIS allows an authorized attacker to elevate privileges over a network.

Use of externally-controlled format string in Active Directory Certificate Services (AD CS) allows an authorized attacker to disclose information over a network.

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

Out-of-bounds read in Windows Spaceport.sys allows an authorized attacker to disclose information over a network.

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

Stack-based buffer overflow in Windows Broker Infrastructure Service allows an authorized attacker to elevate privileges locally.

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

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

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

Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code over a network.

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

Null pointer dereference in Virtual Hard Disk (VHD) Miniport Driver allows an unauthorized attacker to deny service locally.