microsoft has 2,953 CVEs on record between 2013 and 2026. Disclosure cadence is accelerating: 2137 in the last 90 days against 419 in the 90 before. The busiest recent month was September 2026 with 1005. The median CVSS is 7.8 (high), with 178 rated critical. 3% have been exploited in the wild, in line with the corpus average. The median gap from publication to a KEV listing is 113 days (91 cases). The dominant weakness classes are CWE-122 (585) and CWE-416 (512). Most affected products: windows_10_1607 (644), Windows 10 Version 1607 (481), Microsoft 365 Apps for Enterprise (209).
CVEs per month
Last 12 months, by publish date
- Exploited share
- 3% vs 1% corpus
- Median CVSS
- 7.8
- Publish → KEV
- 113 d median(91)
- Last 90 days
- 2137 prev 419
Weakness classes
Products
- windows_10_1607 644
- Windows 10 Version 1607 481
- Microsoft 365 Apps for Enterprise 209
- windows_10 122
- 365_apps 115
- windows_10_1809 106
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.
2953 CVEsRSS
CVE-2026-50431Medium· 5.5Windows Quality of Service (QoS) Packet Scheduler Information Disclosure Vulnerability
Windows Quality of Service (QoS) Packet Scheduler Information Disclosure Vulnerability
CVE-2026-50429High· 8.2Windows Kernel Information Disclosure Vulnerability
Out-of-bounds read in Windows Kernel allows an unauthorized attacker to disclose information over a network.
CVE-2026-50424High· 7.5Windows Domain Controller Denial of Service Vulnerability
Untrusted pointer dereference in Windows Domain Controller allows an unauthorized attacker to deny service over a network.
CVE-2026-50420Medium· 6.2HTTP.sys Information Disclosure Vulnerability
Out-of-bounds read in Windows HTTP.sys allows an unauthorized attacker to disclose information locally.
CVE-2026-50415Medium· 5.3Windows Media Information Disclosure Vulnerability
Exposure of sensitive information to an unauthorized actor in Windows Media allows an unauthorized attacker to disclose information over a network.
CVE-2026-50406High· 7.0Windows Backup Engine Elevation of Privilege Vulnerability
Use after free in Windows Backup Engine allows an authorized attacker to elevate privileges locally.
CVE-2026-50394Medium· 5.5Windows Media Information Disclosure Vulnerability
Exposure of sensitive information to an unauthorized actor in Windows Media allows an authorized attacker to disclose information locally.
CVE-2026-50505High· 7.5Windows Message Queuing Service (MSMQ) Remote Code Execution Vulnerability
Use after free in Windows Message Queuing allows an authorized attacker to execute code over a network.
CVE-2026-50503High· 7.0Windows Runtime Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Runtime allows an authorized attacker to elevate privileges locally.
CVE-2026-50502High· 8.0Windows Event Logging Service Remote Code Execution Vulnerability
Insufficient granularity of access control in Windows Event Logging Service allows an authorized attacker to execute code over a network.
CVE-2026-50501High· 7.8Windows Resilient File System (ReFS) Remote Code Execution Vulnerability
Stack-based buffer overflow in Windows Resilient File System (ReFS) allows an unauthorized attacker to execute code locally.
CVE-2026-50500High· 7.5Windows Netlogon Elevation of Privilege Vulnerability
Use after free in Windows Netlogon allows an authorized attacker to elevate privileges over a network.
CVE-2026-50499High· 7.8Windows Print Spooler Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Print Spooler Components allows an authorized attacker to elevate privileges locally.
CVE-2026-50498High· 7.8Windows Universal Disk Format File System Driver (UDFS) Elevation of Privilege Vulnerability
Windows Universal Disk Format File System Driver (UDFS) Elevation of Privilege Vulnerability
CVE-2026-50495Medium· 6.1DNS Client Tampering Vulnerability
Improper access control in Microsoft Windows DNS allows an authorized attacker to perform tampering locally.
CVE-2026-50494High· 7.8Windows NTFS Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows NTFS allows an authorized attacker to execute code locally.
CVE-2026-50493High· 7.8DirectX Graphics Kernel Elevation of Privilege Vulnerability
Use after free in Windows Graphics Kernel allows an authorized attacker to elevate privileges locally.
CVE-2026-50492Medium· 6.8Windows Resilient File System (ReFS) Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows Resilient File System (ReFS) allows an unauthorized attacker to execute code with a physical attack.
CVE-2026-50491High· 7.0Code Integrity DLL (ci.dll) Elevation of Privilege Vulnerability
Out-of-bounds read in Code Integrity DLL (ci.dll) allows an authorized attacker to elevate privileges locally.
CVE-2026-50490High· 7.0Windows Installer Elevation of Privilege Vulnerability
Use after free in Windows Installer allows an authorized attacker to elevate privileges locally.
CVE-2026-50489High· 8.8Win32k Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Win32K allows an authorized attacker to elevate privileges locally.
CVE-2026-50488High· 7.8Clipboard User Service Elevation of Privilege Vulnerability
Improper neutralization of special elements used in a command ('command injection') in Windows Clipboard User Service allows an authorized attacker to elevate privileges locally.
CVE-2026-50487High· 8.1Windows DNS Client Elevation of Privilege Vulnerability
Use after free in Microsoft Windows DNS allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-50486High· 7.8Windows Runtime Elevation of Privilege Vulnerability
Use after free in Windows Runtime allows an authorized attacker to elevate privileges locally.
CVE-2026-50485Medium· 4.5Windows Hyper-V Denial of Service Vulnerability
Buffer over-read in Windows Hyper-V allows an authorized attacker to deny service over an adjacent network.
CVE-2026-50484High· 7.8Windows Kernel Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.
CVE-2026-50483Medium· 5.5Windows Graphics Component Information Disclosure Vulnerability
Exposure of sensitive information to an unauthorized actor in Microsoft Graphics Component allows an authorized attacker to disclose information locally.
CVE-2026-50482High· 7.3Windows NTFS Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows NTFS allows an authorized attacker to execute code locally.
CVE-2026-50478High· 7.8Windows Kernel Elevation of Privilege Vulnerability
Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
CVE-2026-50477High· 8.8Windows Kernel Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.