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

Follow Microsoft:RSS feed Save a search →Embed badge ↗

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 Installer allows an authorized attacker to elevate privileges locally.

Null pointer dereference in Windows MIDI Service Module allows an authorized attacker to elevate privileges locally.

Null pointer dereference in Windows Installer allows an authorized attacker to elevate privileges locally.

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

Integer overflow or wraparound in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to elevate privileges locally.

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

Improper access control in Windows Host Guardian Service allows an authorized attacker to elevate privileges locally.

Double free in Windows Hyper-V allows an authorized attacker to elevate privileges locally.

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

Heap-based buffer overflow in Windows Storage Spaces Controller allows an unauthorized attacker to deny service over a network.

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

Missing authorization in WebDAV allows an authorized attacker to bypass a security feature over a network.

Use after free in Windows Bluetooth Port Driver allows an unauthorized attacker to elevate privileges over an adjacent network.

Use after free in Windows Quality of Service (QoS) Packet Scheduler allows an authorized attacker to elevate privileges locally.

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

Improper access control in Microsoft Local Security Authority Server (lsasrv) allows an authorized attacker to elevate privileges locally.

Improper access control in Windows Host Guardian Service allows an authorized attacker to perform tampering locally.

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

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

Heap-based buffer overflow in Windows Storage Spaces Controller allows an authorized attacker to elevate privileges locally.

Improper verification of source of a communication channel in Windows Hyper-V allows an unauthorized attacker to bypass a security feature over an adjacent network.

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

Integer overflow or wraparound in Windows Resource Management (MRM) allows an authorized attacker to elevate privileges locally.

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

Heap-based buffer overflow in Winlogon allows an authorized attacker to elevate privileges locally.

Out-of-bounds read in Windows Remote Access Service Infrastructure allows an authorized attacker to disclose information locally.

Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code over a network.

Improper verification of cryptographic signature in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.

Inclusion of functionality from untrusted control sphere in Microsoft Exchange Server allows an authorized attacker to elevate privileges locally.

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