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

Use after free in Active Directory Domain Services allows an unauthorized attacker to execute code over a network.

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

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

Heap-based buffer overflow in Virtual Hard Disk (VHD) Miniport Driver allows an authorized attacker to elevate privileges locally.

Use after free in Windows Audio Service 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.

Out-of-bounds read in Windows Spaceport.sys allows an authorized attacker to execute code locally.

Use after free in Windows Remote Desktop Services allows an authorized attacker to execute code over a network.

Numeric truncation error in Windows Spaceport.sys allows an authorized attacker to elevate privileges locally.

Improper neutralization of special elements used in a command ('command injection') in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate privileges locally.

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

Unintended proxy or intermediary ('confused deputy') in Microsoft Windows Speech allows an authorized attacker to perform tampering locally.

Use after free in Reliable Multicast Transport Driver (RMCAST) allows an unauthorized attacker to execute code over a network.

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

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

Out-of-bounds read in Windows USB Mass Storage Class Driver allows an authorized attacker to disclose information locally.

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

Use after free in Active Directory Domain Services allows an unauthorized attacker to execute code over a network.

Heap-based buffer overflow in Visual Studio allows an unauthorized attacker to execute code over a network.

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

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

Use after free in Connected Devices Platform Service (Cdpsvc) allows an authorized attacker to elevate privileges locally.

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

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

Heap-based buffer overflow in Windows Spaceport.sys 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.

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

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

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

Insertion of sensitive information into externally-accessible file or directory in Microsoft Windows Search Component allows an authorized attacker to disclose information over a network.