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
- 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
Worst active — by depth score
CVE-2025-53770Critical· 9.8Deserialization of untrusted data in on-premises Microsoft SharePoint Server allows an unauthorized attacker to execute code over a network. Microsoft is aware that an exploit for CVE-2025-53770 exists in the wild. Microsoft is preparing…100CVE-2021-38647Critical· 9.8Open Management Infrastructure (OMI) Remote Code Execution Vulnerability100CVE-2021-34473Critical· 9.1Microsoft Exchange Server Remote Code Execution Vulnerability100CVE-2021-26855Critical· 9.1Microsoft Exchange Server Remote Code Execution Vulnerability100CVE-2020-0796Critical· 10.0A remote code execution vulnerability exists in the way that the Microsoft Server Message Block 3.1.1 (SMBv3) protocol handles certain requests, aka 'Windows SMBv3 Client/Server Remote Code Execution Vulnerability'.100
Microsoft vulnerabilities
CVEs affecting Microsoft, newest first. Open any entry for full detail, references, and exploit status.
4599 CVEsRSS
CVE-2026-27921High· 7.0Concurrent execution using shared resource with improper synchronization ('race condition') in Windows TCP/IP allows an authorized attacker to elevate privileges locally.
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows TCP/IP allows an authorized attacker to elevate privileges locally.
CVE-2026-27917High· 7.0Use after free in Windows WFP NDIS Lightweight Filter Driver (wfplwfs.sys) allows an authorized attacker to elevate privileges locally.
Use after free in Windows WFP NDIS Lightweight Filter Driver (wfplwfs.sys) allows an authorized attacker to elevate privileges locally.
CVE-2026-27931Medium· 5.5Out-of-bounds read in Windows GDI allows an unauthorized attacker to disclose information locally.
Out-of-bounds read in Windows GDI allows an unauthorized attacker to disclose information locally.
CVE-2026-27919High· 7.8Untrusted pointer dereference in Windows Universal Plug and Play (UPnP) Device Host allows an authorized attacker to elevate privileges locally.
Untrusted pointer dereference in Windows Universal Plug and Play (UPnP) Device Host allows an authorized attacker to elevate privileges locally.
CVE-2026-27918High· 7.8Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Shell allows an authorized attacker to elevate privileges locally.
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Shell allows an authorized attacker to elevate privileges locally.
CVE-2026-32071High· 7.5Null pointer dereference in Windows Local Security Authority Subsystem Service (LSASS) allows an unauthorized attacker to deny service over a network.
Null pointer dereference in Windows Local Security Authority Subsystem Service (LSASS) allows an unauthorized attacker to deny service over a network.
CVE-2026-27927High· 7.8Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Projected File System allows an authorized attacker to elevate privileges locally.
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Projected File System allows an authorized attacker to elevate privileges locally.
CVE-2026-27924High· 7.8Use after free in Desktop Window Manager allows an authorized attacker to elevate privileges locally.
Use after free in Desktop Window Manager allows an authorized attacker to elevate privileges locally.
CVE-2026-32082High· 7.0Concurrent execution using shared resource with improper synchronization ('race condition') in Windows SSDP Service allows an authorized attacker to elevate privileges locally.
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows SSDP Service allows an authorized attacker to elevate privileges locally.
CVE-2026-32075High· 7.0Use after free in Windows Universal Plug and Play (UPnP) Device Host allows an authorized attacker to elevate privileges locally.
Use after free in Windows Universal Plug and Play (UPnP) Device Host allows an authorized attacker to elevate privileges locally.
CVE-2026-32073High· 7.0Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
CVE-2026-27929High· 7.0Time-of-check time-of-use (toctou) race condition in Windows LUAFV allows an authorized attacker to elevate privileges locally.
Time-of-check time-of-use (toctou) race condition in Windows LUAFV allows an authorized attacker to elevate privileges locally.
CVE-2026-32152High· 7.8Use after free in Desktop Window Manager allows an authorized attacker to elevate privileges locally.
Use after free in Desktop Window Manager allows an authorized attacker to elevate privileges locally.
CVE-2026-32083High· 7.0Concurrent execution using shared resource with improper synchronization ('race condition') in Windows SSDP Service allows an authorized attacker to elevate privileges locally.
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows SSDP Service allows an authorized attacker to elevate privileges locally.
CVE-2026-32081Medium· 5.5Exposure of sensitive information to an unauthorized actor in Windows File Explorer allows an authorized attacker to disclose information locally.
Exposure of sensitive information to an unauthorized actor in Windows File Explorer allows an authorized attacker to disclose information locally.
CVE-2026-32090High· 7.8Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Speech Brokered Api allows an authorized attacker to elevate privileges locally.
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Speech Brokered Api allows an authorized attacker to elevate privileges locally.
CVE-2026-32089High· 7.8Use after free in Windows Speech Brokered Api allows an authorized attacker to elevate privileges locally.
Use after free in Windows Speech Brokered Api allows an authorized attacker to elevate privileges locally.
CVE-2026-32085Medium· 5.5Exposure of sensitive information to an unauthorized actor in Windows Remote Procedure Call allows an authorized attacker to disclose information locally.
Exposure of sensitive information to an unauthorized actor in Windows Remote Procedure Call allows an authorized attacker to disclose information locally.
CVE-2026-32154High· 7.8Use after free in Desktop Window Manager allows an authorized attacker to elevate privileges locally.
Use after free in Desktop Window Manager allows an authorized attacker to elevate privileges locally.
CVE-2026-32093High· 7.0Concurrent execution using shared resource with improper synchronization ('race condition') in Function Discovery Service (fdwsd.dll) allows an authorized attacker to elevate privileges locally.
Concurrent execution using shared resource with improper synchronization ('race condition') in Function Discovery Service (fdwsd.dll) allows an authorized attacker to elevate privileges locally.
CVE-2026-32087High· 7.0Heap-based buffer overflow in Function Discovery Service (fdwsd.dll) allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Function Discovery Service (fdwsd.dll) allows an authorized attacker to elevate privileges locally.
CVE-2026-32160High· 7.8Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Push Notifications allows an authorized attacker to elevate privileges locally.
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Push Notifications allows an authorized attacker to elevate privileges locally.
CVE-2026-32158High· 7.8Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Push Notifications allows an authorized attacker to elevate privileges locally.
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Push Notifications allows an authorized attacker to elevate privileges locally.
CVE-2026-0390Medium· 6.7UEFI Secure Boot Security Feature Bypass Vulnerability
Reliance on untrusted inputs in a security decision in Windows Boot Loader allows an authorized attacker to bypass a security feature locally.
CVE-2026-32167Medium· 6.7SQL Server Elevation of Privilege Vulnerability
Improper neutralization of special elements used in an sql command ('sql injection') in SQL Server allows an authorized attacker to elevate privileges locally.
CVE-2026-32159High· 7.8Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Push Notifications allows an authorized attacker to elevate privileges locally.
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Push Notifications allows an authorized attacker to elevate privileges locally.
CVE-2026-32156High· 7.4Use after free in Windows Universal Plug and Play (UPnP) Device Host allows an unauthorized attacker to execute code locally.
Use after free in Windows Universal Plug and Play (UPnP) Device Host allows an unauthorized attacker to execute code locally.
CVE-2026-32217Medium· 5.5Insertion of sensitive information into log file in Windows Kernel allows an authorized attacker to disclose information locally.
Insertion of sensitive information into log file in Windows Kernel allows an authorized attacker to disclose information locally.
CVE-2026-32181Medium· 5.5Improper privilege management in Microsoft Windows allows an authorized attacker to deny service locally.
Improper privilege management in Microsoft Windows allows an authorized attacker to deny service locally.
CVE-2026-32178High· 7.5.NET Spoofing Vulnerability
Improper neutralization of special elements in .NET allows an unauthorized attacker to perform spoofing over a network.