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

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

Integer overflow or wraparound in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.

Heap-based buffer overflow in Windows Link Layer Topology Discovery Protocol allows an unauthorized attacker to execute code over a network.

Heap-based buffer overflow in HID class driver allows an authorized attacker to elevate privileges locally.

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

Heap-based buffer overflow in Windows Credential Providers allows an authorized attacker to execute code over a network.

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

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

Missing authorization in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.

Exposure of sensitive system information to an unauthorized control sphere in Windows Kernel allows an authorized attacker to disclose information over a network.

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

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

Buffer over-read in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.

Untrusted pointer dereference in Windows Group Policy allows an authorized attacker to elevate privileges over a network.

Improper neutralization of special elements used in an sql command ('sql injection') in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.

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

Stack-based buffer overflow in Windows Device Association Service allows an authorized attacker to elevate privileges over a network.

Dependency on vulnerable third-party component in Windows Secure Boot allows an authorized attacker to bypass a security feature locally.

Use after free in Windows Key Distribution Center allows an authorized attacker to execute code over a network.

Use after free in Windows Device Association Service allows an authorized attacker to elevate privileges locally.

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

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

Use after free in Windows Web Platform Storage allows an authorized attacker to elevate privileges locally.

Integer overflow or wraparound in Windows USB Audio Class driver (usbaudio.sys) allows an authorized attacker to elevate privileges locally.

Use after free in Windows Win32K allows an authorized attacker to elevate privileges over a network.

Deserialization of untrusted data in Windows IP Address Management (IPAM) Service allows an authorized attacker to elevate privileges locally.

Use after free in Windows Device Association Broker service allows an authorized attacker to elevate privileges locally.

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

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

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.