Microsoft has 2,953 CVEs on record between 2013 and 2026. Disclosure cadence is accelerating: 2137 in the last 90 days against 419 in the 90 before. The busiest recent month was September 2026 with 1005. The median CVSS is 7.8 (high), with 178 rated critical. 3% have been exploited in the wild, in line with the corpus average. The median gap from publication to a KEV listing is 113 days (91 cases). The dominant weakness classes are CWE-122 (585) and CWE-416 (512). Most affected products: windows_10_1607 (635), Windows 10 Version 1607 (490), Microsoft 365 Apps for Enterprise (209).

CVEs per month

Last 12 months, by publish date

1025/101125/111225/120126/010226/020326/030426/040526/050626/060726/070826/080926/09

Exploited share: 3% vs 1% corpus
Median CVSS: 7.8
Publish → KEV: 113 d median(91)
Last 90 days: 2137 prev 419

Weakness classes

Products

windows_10_1607 635
Windows 10 Version 1607 490
Microsoft 365 Apps for Enterprise 209
windows_10 122
365_apps 115
windows_10_1809 103

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2953

Total CVEs

178

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.

2953 CVEsRSS

CVEs per month

Weakness classes

Products

Worst active — by depth score

Microsoft vulnerabilities

Stack-based buffer overflow in Microsoft Office Access allows an unauthorized attacker to execute code over a network.

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

Absolute path traversal in Windows Error Reporting allows an authorized attacker to elevate privileges locally.

Use after free in Virtual Hard Disk (VHD) Miniport Driver allows an authorized attacker to elevate privileges locally.

Buffer over-read in Windows Win32K allows an authorized attacker to elevate privileges locally.

Out-of-bounds read in Windows Win32K allows an authorized attacker to disclose information locally.

Integer overflow or wraparound in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.

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

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

Use after free in Microsoft Install Service allows an authorized attacker to elevate privileges locally.

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

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

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

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

Incorrect calculation of buffer size in Windows iSCSI allows an unauthorized attacker to execute code over a network.

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

Use after free in Windows Services for NFS ONCRPC XDR Driver allows an unauthorized attacker to execute code over a network.

Heap-based buffer overflow in Microsoft Local Security Authority Server (lsasrv) allows an authorized attacker to elevate privileges locally.

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

Heap-based buffer overflow in Windows Universal Disk Format File System Driver (UDFS) allows an authorized attacker to elevate privileges locally.

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

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 Biometric Service allows an authorized attacker to elevate privileges locally.

Missing release of memory after effective lifetime in Windows TCP/IP allows an unauthorized attacker to deny service over a network.

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

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

Incorrect type conversion or cast in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.

Integer overflow or wraparound in Windows USB Video Driver allows an authorized attacker to elevate privileges locally.