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 (643), Windows 10 Version 1607 (482), 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 643
- Windows 10 Version 1607 482
- 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-2026-68819Medium· 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.
CVE-2026-58651High· 7.8Microsoft Word Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code locally.
CVE-2026-58641High· 7.8.NET Elevation of Privilege Vulnerability
Integer overflow or wraparound in .NET allows an unauthorized attacker to elevate privileges locally.
CVE-2026-62733High· 7.8Windows Win32k Elevation of Privilege Vulnerability
Out-of-bounds read in Windows Win32K allows an authorized attacker to elevate privileges locally.
CVE-2026-62728High· 7.0Windows Common Log File System Driver Elevation of Privilege Vulnerability
Time-of-check time-of-use (toctou) race condition in Windows Common Log File System Driver allows an authorized attacker to elevate privileges locally.
CVE-2026-62726High· 7.0Windows Telephony Service Elevation of Privilege Vulnerability
Use after free in Windows Telephony Service allows an authorized attacker to elevate privileges locally.
CVE-2026-62725High· 7.0Windows Telephony Service Elevation of Privilege Vulnerability
Use after free in Windows Telephony Service allows an authorized attacker to elevate privileges locally.
CVE-2026-62721High· 7.8Insufficient granularity of access control in User-Mode Power Service (UMPS) allows an authorized attacker to elevate privileges locally.
Insufficient granularity of access control in User-Mode Power Service (UMPS) allows an authorized attacker to elevate privileges locally.
CVE-2026-62720Medium· 6.5Windows DHCP Server Information Disclosure Vulnerability
Integer underflow (wrap or wraparound) in Windows DHCP Server allows an unauthorized attacker to disclose information over an adjacent network.
CVE-2026-62708Medium· 6.4Windows Kernel Elevation of Privilege Vulnerability
Use after free in Windows Kernel allows an unauthorized attacker to elevate privileges with a physical attack.
CVE-2026-61938High· 7.0Windows Installer Elevation of Privilege Vulnerability
Use after free in Windows Installer allows an authorized attacker to elevate privileges locally.
CVE-2026-61929High· 7.0Windows Kernel Elevation of Privilege Vulnerability
Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
CVE-2026-62824High· 8.8Remote Desktop Client Remote Code Execution Vulnerability
Stack-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
CVE-2026-62823High· 8.8Windows DHCP Server Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows DHCP Server allows an unauthorized attacker to execute code over an adjacent network.
CVE-2026-62814Medium· 6.5Windows DHCP Server Information Disclosure Vulnerability
Integer underflow (wrap or wraparound) in Windows DHCP Server allows an unauthorized attacker to disclose information over an adjacent network.