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-2026-58643Medium· 6.1Improper neutralization of input during web page generation ('cross-site scripting') in Windows Admin Center allows an unauthorized attacker to perform spoofing over a network.
Improper neutralization of input during web page generation ('cross-site scripting') in Windows Admin Center allows an unauthorized attacker to perform spoofing over a network.
CVE-2026-58598High· 7.0Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Backup Engine allows an authorized attacker to elevate privileges locally.
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Backup Engine allows an authorized attacker to elevate privileges locally.
CVE-2026-50506High· 7.5OData for ASP.NET and ASP.NET Core Denial of Service Vulnerability
Allocation of resources without limits or throttling in ASP.NET Core allows an unauthorized attacker to deny service over a network.
CVE-2026-49176High· 7.8PoCWindows WalletService Elevation of Privilege Vulnerability
Improper privilege management in Windows WalletService allows an authorized attacker to elevate privileges locally.
CVE-2026-49174Medium· 6.1DNS Client Tampering Vulnerability
Missing authentication for critical function in Microsoft Windows DNS allows an authorized attacker to perform tampering locally.
CVE-2026-55004High· 7.8Windows Print Configuration Elevation of Privilege Vulnerability
Double free in Microsoft Printer Drivers allows an authorized attacker to elevate privileges locally.
CVE-2026-55001High· 7.8Active Directory Domain Services Elevation of Privilege Vulnerability
Improper certificate validation in Windows Active Directory allows an authorized attacker to elevate privileges locally.
CVE-2026-55000Medium· 6.4Windows USB Print Driver Elevation of Privilege Vulnerability
Use after free in Windows USB Print Driver allows an unauthorized attacker to elevate privileges with a physical attack.
CVE-2026-54993High· 7.8Microsoft Windows Media Foundation Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code locally.
CVE-2026-54992High· 8.4PoCMicrosoft Message Queuing Queue Manager Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows Message Queuing Queue Manager allows an unauthorized attacker to execute code locally.
CVE-2026-54991High· 7.8Windows USB Print Driver 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 locally.
CVE-2026-54990Critical· 9.8Remote Desktop Client Remote Code Execution Vulnerability
Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
CVE-2026-54989High· 7.0Quality Windows Audio/Video Experience (QWAVE) Elevation of Privilege Vulnerability
Use after free in Quality Windows Audio/Video Experience (QWAVE) service allows an authorized attacker to elevate privileges locally.
CVE-2026-54987High· 7.8Windows Overlay Filter Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Overlay Filter allows an authorized attacker to elevate privileges locally.
CVE-2026-54986High· 7.8Windows Win32k Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Win32K allows an authorized attacker to elevate privileges locally.
CVE-2026-54983High· 7.5Windows Active Directory Federation Services Denial of Service Vulnerability
Stack-based buffer overflow in Active Directory Federation Services (AD FS) allows an unauthorized attacker to deny service over a network.
CVE-2026-54982High· 8.8Windows Reliable Multicast Transport Driver (RMCAST) Remote Code Execution Vulnerability
Integer underflow (wrap or wraparound) in Reliable Multicast Transport Driver (RMCAST) allows an unauthorized attacker to execute code over an adjacent network.
CVE-2026-54132Medium· 6.8Windows Kernel Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Kernel allows an unauthorized attacker to elevate privileges with a physical attack.
CVE-2026-54129High· 7.0Windows Hyper-V Elevation of Privilege Vulnerability
Use after free in Windows Hyper-V allows an authorized attacker to elevate privileges locally.
CVE-2026-54112High· 7.8Windows Win32k Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Win32K allows an authorized attacker to elevate privileges locally.
CVE-2026-54111High· 7.0Universal 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 locally.
CVE-2026-54109High· 7.8Windows Resilient File System (ReFS) Remote Code Execution Vulnerability
Integer overflow or wraparound in Windows Resilient File System (ReFS) allows an authorized attacker to execute code locally.
CVE-2026-54107High· 8.8PoCWindows Win32k Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Win32K allows an authorized attacker to elevate privileges locally.
CVE-2026-50697High· 7.8Windows Common Log File System Driver Elevation of Privilege Vulnerability
Exposure of sensitive information to an unauthorized actor in Windows Common Log File System Driver allows an authorized attacker to elevate privileges locally.
CVE-2026-50695High· 7.5Windows Active Directory Federation Services Denial of Service Vulnerability
Stack-based buffer overflow in Active Directory Federation Services allows an unauthorized attacker to deny service over a network.
CVE-2026-50663High· 8.8Game: Age of Empires II: Definitive Edition Remote Code Execution Vulnerability
Relative path traversal in Age of Empires II: Definitive Edition Game allows an unauthorized attacker to execute code over a network.
CVE-2026-49175High· 7.8Windows DNS Client Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows DNS allows an authorized attacker to elevate privileges locally.
CVE-2026-49173High· 7.8Windows Kernel Elevation of Privilege Vulnerability
Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
CVE-2026-49172Critical· 9.8Windows FTP Service Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows FTP Service allows an unauthorized attacker to execute code over a network.
CVE-2026-55144High· 7.1Windows Cryptography API: Next Generation (CNG) Tampering Vulnerability
Missing cryptographic step in Windows CryptoAPI allows an authorized attacker to perform tampering locally.