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-2026-58535Medium· 6.5Windows Remote Desktop Client Information Disclosure Vulnerability
Use of uninitialized resource in Windows RDP allows an unauthorized attacker to disclose information over a network.
CVE-2026-58534High· 8.8Windows Input Method Editor (IME) Elevation of Privilege Vulnerability
Heap-based buffer overflow in Microsoft Input Method Editor (IME) allows an authorized attacker to elevate privileges locally.
CVE-2026-58533Medium· 6.5Windows Remote Desktop Client Information Disclosure Vulnerability
Use of uninitialized resource in Windows RDP allows an unauthorized attacker to disclose information over a network.
CVE-2026-58532High· 7.8Windows Kernel Elevation of Privilege Vulnerability
Integer overflow or wraparound in Windows Kernel allows an authorized attacker to elevate privileges locally.
CVE-2026-58531High· 7.5Windows SMB Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows SMB allows an authorized attacker to elevate privileges over a network.
CVE-2026-58530High· 7.8Windows 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 locally.
CVE-2026-58528Medium· 6.8Windows USB Audio Class Driver Information Disclosure Vulnerability
Out-of-bounds read in Windows USB Audio Class driver (usbaudio.sys) allows an unauthorized attacker to disclose information with a physical attack.
CVE-2026-58527High· 7.8Windows 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-2026-58617High· 8.1M365 Copilot for iOS Elevation of Privilege Vulnerability
Improper access control in Microsoft 365 Copilot for iOS allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-58594High· 8.8Remote Desktop Client Remote Code Execution Vulnerability
Integer overflow or wraparound in Windows RDP allows an unauthorized attacker to execute code over a network.
CVE-2026-58547Medium· 5.5Heap-based buffer overflow in Universal Plug and Play (upnp.dll) allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Universal Plug and Play (upnp.dll) allows an authorized attacker to elevate privileges locally.
CVE-2026-58545Medium· 5.5Windows Kernel Security Feature Bypass Vulnerability
Improper access control in Windows Kernel allows an authorized attacker to bypass a security feature locally.
CVE-2026-58544High· 7.0Windows Management Services Elevation of Privilege Vulnerability
Use after free in Windows Management Services allows an authorized attacker to elevate privileges locally.
CVE-2026-58543Medium· 6.3Universal Print Management Service Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows USB Print Driver allows an authorized attacker to elevate privileges with a physical attack.
CVE-2026-58542High· 7.8Windows Media Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows Media allows an unauthorized attacker to execute code locally.
CVE-2026-58540High· 7.8Windows Installer Elevation of Privilege Vulnerability
Improper authorization in Windows Installer allows an authorized attacker to elevate privileges locally.
CVE-2026-58537High· 7.8Microsoft NAT Helper Components (ipnathlp.dll) Elevation of Privilege Vulnerability
Use after free in Microsoft NAT Helper Components (ipnathlp.dll) allows an authorized attacker to elevate privileges locally.
CVE-2026-58536High· 7.8Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability
Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.
CVE-2026-47305High· 7.8Visual Studio Remote Code Execution Vulnerability
Protection mechanism failure in Visual Studio allows an unauthorized attacker to execute code locally.
CVE-2026-58634High· 7.8Desktop Window Manager Elevation of Privilege Vulnerability
Use after free in Desktop Window Manager allows an authorized attacker to elevate privileges locally.
CVE-2026-58633High· 7.8Desktop Window Manager Elevation of Privilege Vulnerability
Use after free in Desktop Window Manager allows an authorized attacker to elevate privileges locally.
CVE-2026-58627High· 7.5Windows DHCP Server Denial of Service Vulnerability
Uncontrolled resource consumption in Windows DHCP Server allows an unauthorized attacker to deny service over a network.
CVE-2026-58626High· 8.8Windows Remote Desktop Services Remote Code Execution Vulnerability
Use after free in Windows Remote Desktop Services allows an authorized attacker to execute code over a network.
CVE-2026-58619High· 7.0Use after free in Windows Sensor Data Service allows an authorized attacker to elevate privileges locally.
Use after free in Windows Sensor Data Service allows an authorized attacker to elevate privileges locally.
CVE-2026-58613High· 7.8Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability
Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.
CVE-2026-58541High· 7.8Microsoft DWM Core Library Elevation of Privilege Vulnerability
Access of resource using incompatible type ('type confusion') in Windows DWM allows an authorized attacker to elevate privileges locally.
CVE-2026-55121Medium· 5.5Microsoft Office Information Disclosure Vulnerability
Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.
CVE-2026-58638Medium· 6.0Windows Boot Loader Security Feature Bypass Vulnerability
Missing cryptographic step in Windows Boot Loader allows an authorized attacker to bypass a security feature locally.
CVE-2026-58637High· 7.0Windows Client-Side Caching Elevation of Privilege Vulnerability
Use after free in Windows Client-Side Caching (CSC) Service allows an authorized attacker to elevate privileges locally.
CVE-2026-58632High· 7.8Windows Win32 Kernel Subsystem Elevation of Privilege Vulnerability
Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally.