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

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

Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Bluetooth Driver allows an authorized attacker to elevate privileges locally.

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

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

Relative path traversal in Windows Internet (wininet.dll) allows an authorized attacker to perform tampering locally.

Improper access control in Windows NTFS allows an authorized attacker to disclose information locally.

Heap-based buffer overflow in Servicing Stack Updates allows an authorized attacker to elevate privileges locally.

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

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

Stack-based buffer overflow in Windows GDI allows an unauthorized attacker to deny service over a network.

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

Use after free in Windows Universal Disk Format File System Driver (UDFS) allows an authorized attacker to elevate privileges locally.

Out-of-bounds read in Windows Event Logging Service allows an unauthorized attacker to execute code over a network.

Integer underflow (wrap or wraparound) in Windows WLAN Service allows an unauthorized attacker to deny service over a network.

Improper access control in Windows Notification allows an authorized attacker to disclose information locally.

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

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

Heap-based buffer overflow in Windows Partition Management Driver allows an unauthorized attacker to elevate privileges over a network.

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

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

Untrusted pointer dereference in Windows COM+ Event System Service allows an authorized attacker to elevate privileges locally.

Heap-based buffer overflow in Microsoft Account 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.

Improper privilege management in Windows Internet (wininet.dll) allows an authorized attacker to perform spoofing locally.

Out-of-bounds read in Windows Paint allows an unauthorized attacker to execute code over a network.

Out-of-bounds read in Windows Internet Key Exchange (IKE) Protocol allows an unauthorized attacker to deny service over a network.

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

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Win32K allows an authorized attacker to elevate privileges locally.

Weak authentication in Windows Error Reporting allows an authorized attacker to elevate privileges locally.

Time-of-check time-of-use (toctou) race condition in Windows Hyper-V allows an authorized attacker to elevate privileges locally.