Microsoft has 4,599 CVEs on record between 2012 and 2026. Disclosure cadence is accelerating: 2930 in the last 90 days against 932 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 932

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

Improper resolution of path equivalence in Visual Studio Code allows an unauthorized attacker to bypass a security feature locally.

Improper limitation of a pathname to a restricted directory ('path traversal') in Visual Studio Code allows an authorized attacker to disclose information over a network.

Heap-based buffer overflow in Windows Resilient File System (ReFS) allows an authorized attacker to execute code locally.

Improper limitation of a pathname to a restricted directory ('path traversal') in Dynamics Business Central allows an authorized attacker to elevate privileges over a network.

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

No cwe for this issue in Windows Secure Boot allows an authorized attacker to bypass a security feature locally.

Use after free in Windows VHD miniport driver 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.

Improper resolution of path equivalence in WebDAV allows an authorized attacker to elevate privileges over a network.

Access of resource using incompatible type ('type confusion') in Windows StateRepository API 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.

Use after free in Windows Hyper-V allows an authorized attacker to execute code locally.

Use after free in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to elevate privileges locally.

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

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

Use after free in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.

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

Heap-based buffer overflow in Windows Portable Device MTP Driver allows an unauthorized attacker to elevate privileges with a physical attack.

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

Improper link resolution before file access ('link following') in Microsoft Defender for Endpoint allows an authorized attacker to elevate privileges locally.

Access of resource using incompatible type ('type confusion') in RPC Runtime allows an unauthorized attacker to execute code over a network.

Improper access control in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to elevate privileges locally.

Use after free in Microsoft Windows Media Foundation allows an authorized attacker to elevate privileges locally.

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

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

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

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

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

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

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