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

Improper handling of insufficient permissions or privileges in Windows Enterprise App Management allows an authorized attacker to elevate privileges locally.

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

Server-side request forgery (ssrf) in Microsoft Office SharePoint allows an authorized attacker to disclose information over a network.

Untrusted pointer dereference in Kernel Streaming WOW Thunk Service 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 Spaceport.sys allows an authorized attacker to disclose information locally.

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

Use after free in Windows Virtual Trusted Platform Module allows an authorized attacker to elevate privileges locally.

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

Null pointer dereference in Windows IKE Extension allows an unauthorized attacker to deny service over a network.

Heap-based buffer overflow in Windows DHCP Server allows an authorized attacker to execute code locally.

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

Heap-based buffer overflow in Windows NTFS allows an authorized attacker to elevate privileges over a network.

Untrusted pointer dereference in Windows ALPC allows an authorized attacker to elevate privileges locally.

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

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

Out-of-bounds read in Windows Wireless Wide Area Network Service allows an authorized attacker to disclose information locally.

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

Time-of-check time-of-use (toctou) race condition in Windows USB Audio Class driver (usbaudio.sys) allows an authorized attacker to elevate privileges locally.

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

Improper authentication in Spring Cloud Azure allows an unauthorized attacker to elevate privileges over a network.

Use of uninitialized resource in Windows Win32K allows an authorized attacker to disclose information locally.

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 DHCP Server allows an authorized attacker to execute code over an adjacent network.

Integer overflow or wraparound in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges locally.

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

Out-of-bounds read in Windows Win32K allows an authorized attacker to elevate privileges locally.

Heap-based buffer overflow in Windows Encrypting File System (EFS) allows an authorized attacker to elevate privileges locally.

Uncaught exception in Windows iSCSI Target Service allows an authorized attacker to deny service over a network.

Use after free in Windows Print Spooler Components allows an authorized attacker to elevate privileges locally.