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-2026-65788High· 7.0Desktop Window Manager Elevation of Privilege Vulnerability
Use after free in Desktop Window Manager allows an authorized attacker to elevate privileges locally.
CVE-2026-65787High· 7.8Desktop Window Manager Elevation of Privilege Vulnerability
Heap-based buffer overflow in Desktop Window Manager allows an authorized attacker to elevate privileges locally.
CVE-2026-65786High· 7.8Desktop Window Manager Elevation of Privilege Vulnerability
Heap-based buffer overflow in Desktop Window Manager allows an authorized attacker to elevate privileges locally.
CVE-2026-65785Medium· 6.5Windows DHCP Client Denial of Service Vulnerability
Uncontrolled resource consumption in Windows DHCP Client allows an unauthorized attacker to deny service over an adjacent network.
CVE-2026-65784Medium· 5.5Windows NTFS Information Disclosure Vulnerability
Out-of-bounds read in Windows NTFS allows an authorized attacker to disclose information locally.
CVE-2026-65678High· 7.0Windows Win32k Elevation of Privilege Vulnerability
Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally.
CVE-2026-65672High· 7.8Remote Access API Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Remote Access API allows an authorized attacker to elevate privileges locally.
CVE-2026-65671High· 7.8Remote Access API Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Remote Access API allows an authorized attacker to elevate privileges locally.
CVE-2026-65665High· 8.8Microsoft SharePoint Server Remote Code Execution Vulnerability
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
CVE-2026-65664High· 7.8Microsoft Office Graphics Component Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
CVE-2026-65663High· 8.8Microsoft SharePoint Server Remote Code Execution Vulnerability
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
CVE-2026-65662Medium· 5.5Windows GDI Information Disclosure Vulnerability
Out-of-bounds read in Windows GDI allows an authorized attacker to disclose information locally.
CVE-2026-65661High· 7.8Microsoft Office Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
CVE-2026-68820High· 7.0CISA KEV0dayPoCWindows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
CVE-2026-68819Medium· 5.9Windows Network File System Denial of Service Vulnerability
Buffer over-read in Windows Network File System allows an unauthorized attacker to deny service over a network.
CVE-2026-68816High· 7.8Microsoft Excel Remote Code Execution Vulnerability
Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-68815High· 7.8Microsoft Excel Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-68813Medium· 5.5Microsoft Excel Information Disclosure Vulnerability
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
CVE-2026-68811High· 7.8Microsoft Excel Remote Code Execution Vulnerability
Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-68809Medium· 5.5Powerpoint Information Disclosure Vulnerability
Incomplete cleanup in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information locally.
CVE-2026-68806High· 7.8Microsoft Excel Remote Code Execution Vulnerability
Out-of-bounds write in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-66301Medium· 6.5Microsoft Dynamics 365 (On-Premises) Information Disclosure Vulnerability
Exposure of sensitive information to an unauthorized actor in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to disclose information over a network.
CVE-2026-66804High· 7.8PoCMicrosoft Windows Cross Device Service Elevation of Privilege Vulnerability
Improper access control in Windows Cross Device Service allows an authorized attacker to elevate privileges locally.
CVE-2026-65806Medium· 6.5Azure CycleCloud Information Disclosure Vulnerability
Missing authorization in Azure CycleCloud allows an authorized attacker to disclose information over a network.
CVE-2026-65783High· 7.0Windows Autopilot Elevation of Privilege Vulnerability
Use after free in Windows Autopilot allows an authorized attacker to elevate privileges locally.
CVE-2026-61359High· 7.8Windows Storage Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Storage allows an authorized attacker to elevate privileges locally.
CVE-2026-61357High· 7.8Application Information Services Elevation of Privilege Vulnerability
Use after free in Application Information Services allows an authorized attacker to elevate privileges locally.
CVE-2026-61355High· 7.8Windows Sensor Data Service Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Sensor Data Service allows an authorized attacker to elevate privileges locally.
CVE-2026-59126High· 7.0Windows Event Logging Service Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Event Logging Service allows an authorized attacker to elevate privileges locally.
CVE-2026-59119High· 7.3PowerShell Elevation of Privilege Vulnerability
Incorrect default permissions in Microsoft PowerShell allows an authorized attacker to elevate privileges locally.