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

Follow Microsoft:RSS feed Save a search →Embed badge ↗

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

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

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

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

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

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

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

Improper link resolution before file access ('link following') in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.

Out-of-bounds read in Windows Wi-Fi Driver allows an unauthorized attacker to deny service over an adjacent network.

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

Use after free in Windows Now Playing Session Manager allows an authorized attacker to elevate privileges locally.

Use after free in Windows Now Playing Session Manager allows an authorized attacker to elevate privileges locally.

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

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

Time-of-check time-of-use (toctou) race condition in Windows Modern Device Management (MDM) allows an authorized attacker to perform tampering locally.

Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.

Use of uninitialized resource in Windows Event Logging Service allows an authorized attacker to disclose information locally.

Out-of-bounds read in Windows Volume Manager Extension Driver allows an authorized attacker to elevate privileges locally.

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

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

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

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

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

Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.

Use after free in Windows Connected User Experiences and Telemetry allows an authorized attacker to elevate privileges locally.

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

Buffer over-read in Windows IKE Extension allows an authorized attacker to deny service over a network.

Absolute path traversal in Windows Encrypting File System (EFS) allows an authorized attacker to disclose information over a network.

Use after free in Windows TCP/IP allows an authorized attacker to elevate privileges locally.

Weak authentication in Microsoft PowerToys allows an authorized attacker to perform tampering locally.

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