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-2026-50325High· 7.0Win32k Elevation of Privilege Vulnerability
Improper access control in Windows Win32K allows an authorized attacker to elevate privileges locally.
CVE-2026-50318High· 7.8Windows Resilient File System (ReFS) Elevation of Privilege Vulnerability
Stack-based buffer overflow in Windows Resilient File System (ReFS) allows an authorized attacker to elevate privileges locally.
CVE-2026-50316Medium· 5.5Windows Kernel Information Disclosure Vulnerability
Insertion of sensitive information into log file in Windows Kernel allows an authorized attacker to disclose information locally.
CVE-2026-50305High· 7.8Microsoft Brokering File System Elevation of Privilege Vulnerability
Use after free in Microsoft Brokering File System allows an authorized attacker to elevate privileges locally.
CVE-2026-50303Medium· 5.5Windows Key Guard Security Feature Bypass Vulnerability
Use of a cryptographic primitive with a risky implementation in Windows Key Guard allows an authorized attacker to bypass a security feature locally.
CVE-2026-50302Medium· 4.2Windows Cryptographic Services Security Feature Bypass Vulnerability
Improper certificate validation in Windows Cryptographic Services allows an unauthorized attacker to bypass a security feature over a network.
CVE-2026-50300Medium· 5.5Windows DWM Core Library Information Disclosure Vulnerability
Integer underflow (wrap or wraparound) in Windows Kernel allows an authorized attacker to disclose information locally.
CVE-2026-50298Medium· 6.8Windows Spaceport.sys Elevation of Privilege Vulnerability
Integer overflow or wraparound in Windows Spaceport.sys allows an unauthorized attacker to elevate privileges with a physical attack.
CVE-2026-50297High· 7.0Win32k Elevation of Privilege Vulnerability
Improper access control in Windows Win32K allows an authorized attacker to elevate privileges locally.
CVE-2026-50296High· 7.0DirectX Graphics Kernel Elevation of Privilege Vulnerability
Use after free in Graphics Kernel allows an authorized attacker to elevate privileges locally.
CVE-2026-50295Medium· 5.5Windows Zero Trust DNS Security Feature Bypass Vulnerability
Improper privilege management in Microsoft Windows DNS allows an authorized attacker to bypass a security feature locally.
CVE-2026-50293High· 7.8Windows Internal Task Bar Elevation of Privilege Vulnerability
Use after free in Windows Internal Task Bar allows an authorized attacker to elevate privileges locally.
CVE-2026-49808High· 7.8Windows Kernel Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Kernel allows an authorized attacker to elevate privileges locally.
CVE-2026-49807Medium· 6.2Windows DirectX Information Disclosure Vulnerability
Exposure of sensitive information to an unauthorized actor in Windows DirectX allows an unauthorized attacker to disclose information locally.
CVE-2026-50440High· 7.8Windows Audio Service Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Audio Service allows an authorized attacker to elevate privileges locally.
CVE-2026-50419Low· 3.3Windows Kernel Information Disclosure Vulnerability
Exposure of sensitive information to an unauthorized actor in Windows Kernel allows an authorized attacker to disclose information locally.
CVE-2026-50412High· 7.8Windows NTFS Elevation of Privilege Vulnerability
Stack-based buffer overflow in Windows NTFS allows an authorized attacker to elevate privileges locally.
CVE-2026-50407High· 7.8Windows Resilient File System (ReFS) Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Resilient File System (ReFS) allows an authorized attacker to elevate privileges locally.
CVE-2026-50400High· 7.8Windows App Package Installer Elevation of Privilege Vulnerability
Stack-based buffer overflow in Windows App Installer allows an authorized attacker to elevate privileges locally.
CVE-2026-50393High· 7.0Windows Kernel-Mode Driver Elevation of Privilege Vulnerability
Use after free in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges locally.
CVE-2026-50386High· 7.8Windows NTFS Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to execute code locally.
CVE-2026-50380Critical· 9.6Windows GDI+ Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows GDI+ allows an unauthorized attacker to execute code over a network.
CVE-2026-50370High· 8.8DHCP Server Service Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows DHCP Server allows an unauthorized attacker to execute code over an adjacent network.
CVE-2026-50363High· 7.8Windows Push Notifications Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Push Notifications allows an authorized attacker to elevate privileges locally.
CVE-2026-50360High· 8.8Windows SMB Server Elevation of Privilege Vulnerability
Incorrect implementation of authentication algorithm in Windows SMB Server allows an authorized attacker to elevate privileges over a network.
CVE-2026-50343High· 7.8PoCMicrosoft Install Service Elevation of Privilege Vulnerability
Improper privilege management in Microsoft Install Service allows an authorized attacker to elevate privileges locally.
CVE-2026-50341Medium· 5.5Windows NTFS Information Disclosure Vulnerability
Buffer over-read in Windows NTFS allows an authorized attacker to disclose information locally.
CVE-2026-50337High· 7.8Windows Notification Elevation of Privilege Vulnerability
Incorrect type conversion or cast in Windows Notification allows an authorized attacker to elevate privileges locally.
CVE-2026-50331High· 7.8Use after free in Windows Application Model allows an authorized attacker to elevate privileges locally.
Use after free in Windows Application Model allows an authorized attacker to elevate privileges locally.
CVE-2026-50329High· 7.8Microsoft DWM Core Library Elevation of Privilege Vulnerability
Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.