Microsoft has 4,598 CVEs on record between 2012 and 2026. Disclosure cadence is accelerating: 2929 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 272 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: 2929 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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4598

Total CVEs

272

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.

4598 CVEsRSS

CVEs per month

Weakness classes

Products

Worst active — by depth score

Microsoft vulnerabilities

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

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

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

Untrusted pointer dereference in DNS Server allows an unauthorized attacker to execute code over a network.

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

Heap-based buffer overflow in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally.

Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.

Exposure of sensitive information to an unauthorized actor in Azure HDInsight allows an unauthorized attacker to disclose information over a network.

Missing authentication for critical function in Windows Health and Optimized Experiences Service allows an authorized attacker to elevate privileges locally.

Stack-based buffer overflow in Microsoft Graphics Component allows an authorized attacker to elevate privileges over a network.

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

Use after free in Windows Message Queuing Queue Manager allows an authorized attacker to execute code locally.

Improper authorization in Skype for Business and Microsoft Lync allows an authorized attacker to elevate privileges over a network.

Use after free in Windows Storage VSP Driver allows an authorized attacker to elevate privileges locally.

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

Heap-based buffer overflow in Windows Common Log File System Driver allows an authorized attacker to elevate privileges locally.

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

Use after free in Windows Common Log File System Driver allows an authorized attacker to elevate privileges locally.

Heap-based buffer overflow in Windows Remote Access Connection Manager allows an authorized attacker to elevate privileges locally.

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

Improper authentication in Windows DHCP Server allows an authorized attacker to bypass a security feature locally.

Improper privilege management in Python allows an authorized attacker to elevate privileges locally.

Use after free in Windows Clipboard User Service allows an authorized attacker to elevate privileges locally.

Use after free in Windows Clipboard User Service allows an authorized attacker to elevate privileges locally.

Use after free in Windows Message Queuing Queue Manager allows an authorized attacker to elevate privileges locally.

Null pointer dereference in Windows Message Queuing Queue Manager allows an authorized attacker to deny service over a network.

Out-of-bounds read in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.

Insertion of sensitive information into log file in Windows Kernel-Mode Drivers allows an authorized attacker to disclose information locally.

Heap-based buffer overflow in Windows Internet Connection Sharing (ICS) allows an authorized attacker to execute code over an adjacent network.

Use after free in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.