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-2026-50499High· 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.
CVE-2026-50459High· 7.0Windows Kernel Elevation of Privilege Vulnerability
Use after free in Windows Kernel allows an unauthorized attacker to elevate privileges locally.
CVE-2026-50649High· 7.8.NET Remote Code Execution Vulnerability
Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code locally.
CVE-2026-50646High· 7.8.NET Framework Remote Code Execution Vulnerability
Protection mechanism failure in .NET Framework allows an unauthorized attacker to execute code locally.
CVE-2026-50518Critical· 9.8Windows DHCP Server Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows DHCP Server allows an unauthorized attacker to execute code over a network.
CVE-2026-50510High· 7.8GitHub Copilot Remote Code Execution Vulnerability
Improper restriction of names for files and other resources in Github Copilot allows an unauthorized attacker to execute code locally.
CVE-2026-50509High· 7.8Wireless Wide Area Network Service (WwanSvc) Elevation of Privilege Vulnerability
Deserialization of untrusted data in Windows Wireless Wide Area Network Service allows an authorized attacker to elevate privileges locally.
CVE-2026-50504Medium· 6.5Windows Remote Desktop Client Information Disclosure Vulnerability
Buffer over-read in Remote Desktop Client allows an unauthorized attacker to disclose information over a network.
CVE-2026-50497Medium· 6.5Windows Remote Desktop Protocol (RDP) Information Disclosure Vulnerability
Off-by-one error in Windows Remote Desktop Protocol allows an unauthorized attacker to disclose information over a network.
CVE-2026-50496High· 7.5Windows Network Policy Server SNMP Information Disclosure Vulnerability
Out-of-bounds read in Windows Network Policy Server SNMP allows an unauthorized attacker to disclose information over a network.
CVE-2026-47295High· 8.8Microsoft SQL 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 over a network.
CVE-2026-50661Medium· 6.1Windows BitLocker Security Feature Bypass Vulnerability
Protection mechanism failure in Windows BitLocker allows an unauthorized attacker to bypass a security feature with a physical attack.
CVE-2026-50658High· 7.0Microsoft Defender for Endpoint for Mac Elevation of Privilege Vulnerability
Time-of-check time-of-use (toctou) race condition in Microsoft Defender allows an authorized attacker to elevate privileges locally.