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-2026-58651High· 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· 8.8Stack-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
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.
CVE-2026-62807High· 7.8Windows DHCP Server Elevation of Privilege Vulnerability
Improper link resolution before file access ('link following') in Windows DHCP Server allows an authorized attacker to elevate privileges locally.
CVE-2026-62803High· 7.8Windows DHCP Server Elevation of Privilege Vulnerability
Improper link resolution before file access ('link following') in Windows DHCP Server allows an authorized attacker to elevate privileges locally.
CVE-2026-62800High· 8.8Windows SMBv3 Server Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows SMB Server allows an authorized attacker to execute code over a network.
CVE-2026-62799High· 7.8Windows SMB Client Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows SMB Client allows an authorized attacker to elevate privileges locally.
CVE-2026-62793Medium· 5.5Windows NTFS Information Disclosure Vulnerability
Buffer over-read in Windows NTFS allows an authorized attacker to disclose information locally.
CVE-2026-62790High· 8.8Windows SMBv3 Server Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows SMB Server allows an authorized attacker to execute code over a network.
CVE-2026-62788High· 7.0Windows Kernel Elevation of Privilege Vulnerability
Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
CVE-2026-62786Medium· 5.5Win32k Information Disclosure Vulnerability
Out-of-bounds read in Windows Win32K allows an authorized attacker to disclose information locally.
CVE-2026-62782Medium· 6.5Windows SMB Client Information Disclosure Vulnerability
Out-of-bounds read in Windows SMB Client allows an unauthorized attacker to disclose information over a network.
CVE-2026-62781High· 8.1RPC Runtime Library Remote Code Execution Vulnerability
Heap-based buffer overflow in RPC Runtime allows an unauthorized attacker to execute code over a network.
CVE-2026-62780High· 7.0Windows Kernel Elevation of Privilege Vulnerability
Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
CVE-2026-62778High· 8.1Windows DNS Elevation of Privilege Vulnerability
Use after free in Windows DNS allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-62776High· 7.8Windows DHCP Server Elevation of Privilege Vulnerability
Improper link resolution before file access ('link following') in Windows DHCP Server allows an authorized attacker to elevate privileges locally.
CVE-2026-62775Medium· 5.5Windows Container Isolation FS Filter Driver (unionfs.sys) Information Disclosure Vulnerability
Incorrect authorization in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to disclose information locally.
CVE-2026-62771High· 7.8Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.
CVE-2026-62770High· 7.8Windows Shell Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Shell allows an authorized attacker to elevate privileges locally.