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-2026-48581High· 7.8Surface Broker SDMA Elevation of Privilege Vulnerability
Insufficient granularity of access control in Microsoft Surface allows an authorized attacker to elevate privileges locally.
CVE-2026-50333High· 7.8Windows Spaceport.sys Elevation of Privilege Vulnerability
Missing authentication for critical function in Windows Spaceport.sys allows an authorized attacker to elevate privileges locally.
CVE-2026-50323High· 7.0Use after free in Windows Runtime allows an authorized attacker to elevate privileges locally.
Use after free in Windows Runtime allows an authorized attacker to elevate privileges locally.
CVE-2026-50308High· 7.8Windows NTFS Remote Code Execution Vulnerability
Integer underflow (wrap or wraparound) in Windows NTFS allows an unauthorized attacker to execute code locally.
CVE-2026-50299Medium· 6.8Windows Storage Spaces Direct Remote Code Execution Vulnerability
Integer overflow or wraparound in Windows Storage Spaces Direct allows an unauthorized attacker to execute code with a physical attack.
CVE-2026-50294Medium· 6.2Windows Kernel Information Disclosure Vulnerability
Exposure of sensitive system information to an unauthorized control sphere in Windows Kernel allows an unauthorized attacker to disclose information locally.
CVE-2026-49806High· 7.0Windows USB Print Driver Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows USB Print Driver allows an authorized attacker to elevate privileges locally.
CVE-2026-49805High· 7.0Win32k Elevation of Privilege Vulnerability
Improper access control in Windows Win32K allows an authorized attacker to elevate privileges locally.
CVE-2026-49804Medium· 6.6Windows USB Video Driver Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows USB Video Driver allows an unauthorized attacker to elevate privileges with a physical attack.
CVE-2026-49803High· 7.0Windows AppX Deployment Extensions Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows AppX Deployment Service allows an authorized attacker to elevate privileges locally.
CVE-2026-49802High· 7.0Concurrent execution using shared resource with improper synchronization ('race condition') in Windows USB Print Driver allows an authorized attacker to elevate privileges locally.
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows USB Print Driver allows an authorized attacker to elevate privileges locally.
CVE-2026-49801Medium· 5.5Windows SMB Information Disclosure Vulnerability
Use of uninitialized resource in Windows SMB allows an authorized attacker to disclose information locally.
CVE-2026-49799Medium· 6.5Windows Local Security Authority Subsystem Service (LSASS) Denial of Service Vulnerability
Uncontrolled resource consumption in Windows Local Security Authority Subsystem Service (LSASS) allows an authorized attacker to deny service over a network.
CVE-2026-49798Critical· 9.3Windows Kernel Elevation of Privilege Vulnerability
Use after free in Windows Kernel allows an unauthorized attacker to elevate privileges locally.
CVE-2026-49797High· 7.8Windows NTFS Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to execute code locally.
CVE-2026-49796High· 7.8Windows GDI+ Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows GDI+ allows an unauthorized attacker to execute code locally.
CVE-2026-49795High· 8.8Windows Kernel Elevation of Privilege Vulnerability
Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
CVE-2026-49793High· 7.8Windows Resilient File System (ReFS) Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows Resilient File System (ReFS) allows an authorized attacker to execute code locally.
CVE-2026-49792High· 7.8Windows Resilient File System (ReFS) Remote Code Execution Vulnerability
Numeric truncation error in Windows Resilient File System (ReFS) allows an authorized attacker to execute code locally.
CVE-2026-50392High· 7.0Use after free in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges locally.
Use after free in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges locally.
CVE-2026-50384High· 7.0Windows Clip Service Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Clip Service allows an authorized attacker to elevate privileges locally.
CVE-2026-50381Medium· 5.5Composite Image File System driver (cimfs.sys) Information Disclosure Vulnerability
Access of resource using incompatible type ('type confusion') in Composite Image File System Driver allows an authorized attacker to disclose information locally.
CVE-2026-50372High· 7.0Windows Redirected Drive Buffering System Elevation of Privilege Vulnerability
Buffer over-read in Windows Redirected Drive Buffering allows an authorized attacker to elevate privileges locally.
CVE-2026-50364High· 7.3Windows Backup Service Elevation of Privilege Vulnerability
Improper link resolution before file access ('link following') in Windows Server Backup allows an authorized attacker to elevate privileges locally.
CVE-2026-50356High· 7.0Microsoft Windows App Store Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Windows App Store allows an authorized attacker to elevate privileges locally.
CVE-2026-50354High· 7.1Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
CVE-2026-50351High· 7.8Windows Audio Compression Manager (ACM) Elevation of Privilege Vulnerability
Improper access control in Windows Audio Compression Manager (ACM) allows an authorized attacker to elevate privileges locally.
CVE-2026-50350Medium· 5.5Windows Trusted Runtime Interface Driver Information Disclosure Vulnerability
Exposure of sensitive information to an unauthorized actor in Windows Trusted Runtime Interface Driver allows an authorized attacker to disclose information locally.
CVE-2026-50342High· 8.8Windows MIDI Service Module Elevation of Privileges Vulnerability
Improper access control in Windows MIDI Service Module allows an authorized attacker to elevate privileges locally.
CVE-2026-50332High· 7.8Windows Kernel Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.