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 Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.

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

Use after free in Windows Remote Desktop Protocol allows an authorized attacker to elevate privileges locally.

Out-of-bounds read in Remote Desktop Display Driver allows an authorized attacker to disclose information locally.

Heap-based buffer overflow in Windows DHCP Server allows an unauthorized attacker to execute code over a network.

Use after free in Windows USB Print Driver allows an authorized attacker to elevate privileges locally.

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

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

Improper access control in Windows Routing and Remote Access Service (RRAS) allows an authorized attacker to perform tampering locally.

Missing authorization in Windows Overlay Filter allows an authorized attacker to perform tampering locally.

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

Missing authentication for critical function in Windows Push Notifications allows an authorized attacker to elevate privileges locally.

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

Improper authorization in Windows Network List Service allows an authorized attacker to perform tampering locally.

Use after free in Windows USB Print Driver allows an authorized attacker to elevate privileges locally.

Use after free in Windows Subsystem for Linux allows an authorized attacker to elevate privileges locally.

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

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

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

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

Use after free in Windows USB Print Driver allows an authorized attacker to elevate privileges locally.

Improperly implemented security check for standard in Microsoft PowerShell allows an unauthorized attacker to bypass a security feature over a network.

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

Use after free in Windows USB Print Driver allows an authorized attacker to elevate privileges locally.

Uncontrolled resource consumption in RPC Endpoint Mapper Service allows an unauthorized attacker to deny service over a network.

Use after free in Windows USB Print Driver allows an authorized attacker to elevate privileges locally.

Use after free in Windows USB Print Driver allows an authorized attacker to elevate privileges locally.

Improper verification of cryptographic signature in Active Directory Federation Services (AD FS) allows an unauthorized attacker to perform spoofing over a network.

Reliance on untrusted inputs in a security decision in Microsoft PowerShell allows an unauthorized attacker to execute code over a network.

Use after free in Windows USB Print Driver allows an authorized attacker to elevate privileges locally.