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

Stack-based buffer overflow in Windows Error Reporting allows an unauthorized attacker to execute code over a network.

Access of resource using incompatible type ('type confusion') in DNS Server allows an unauthorized attacker to execute code over a network.

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

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

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

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

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

Null pointer dereference in Windows Hyper-V allows an authorized attacker to deny service locally.

Out-of-bounds read in DNS Server allows an unauthorized attacker to deny service over a network.

Double free in Windows BitLocker allows an authorized attacker to elevate privileges locally.

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

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

Weak authentication in Windows Resilient File System (ReFS) Deduplication Service allows an authorized attacker to elevate privileges locally.

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

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

Improper access control in Windows Geotag Broker allows an authorized attacker to elevate privileges locally.

Use after free in Windows Graphics Kernel allows an authorized attacker to disclose information locally.

Heap-based buffer overflow in Windows Client-Side Caching (CSC) Service allows an authorized attacker to elevate privileges locally.

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

Integer underflow (wrap or wraparound) in Windows PowerShell allows an unauthorized attacker to execute code over a network.

Use after free in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.

Use after free in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.

Integer overflow or wraparound in Windows Kernel Mode Driver allows an unauthorized attacker to elevate privileges with a physical attack.

Null pointer dereference in Windows Audio Service allows an authorized attacker to disclose information locally.

Use after free in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.

Heap-based buffer overflow in HID Parser Library allows an authorized attacker to elevate privileges locally.

Improper access control in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges locally.

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

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

Buffer over-read in Windows Encrypting File System (EFS) allows an authorized attacker to disclose information locally.