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-2026-68887High· 7.5Out-of-bounds read in Windows Message Queuing Queue Manager allows an unauthorized attacker to deny service over a network.
Out-of-bounds read in Windows Message Queuing Queue Manager allows an unauthorized attacker to deny service over a network.
CVE-2026-68886Medium· 5.5Use after free in Windows Network Connection Broker allows an authorized attacker to disclose information locally.
Use after free in Windows Network Connection Broker allows an authorized attacker to disclose information locally.
CVE-2026-68885High· 7.8Heap-based buffer overflow in Microsoft Standard XPS allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Microsoft Standard XPS allows an authorized attacker to elevate privileges locally.
CVE-2026-68884High· 7.0Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.
CVE-2026-68881Medium· 5.5Out-of-bounds read in Microsoft Standard XPS allows an authorized attacker to disclose information locally.
Out-of-bounds read in Microsoft Standard XPS allows an authorized attacker to disclose information locally.
CVE-2026-68880High· 8.0Heap-based buffer overflow in Windows Win32K allows an authorized attacker to elevate privileges over a network.
Heap-based buffer overflow in Windows Win32K allows an authorized attacker to elevate privileges over a network.
CVE-2026-68878High· 8.0Stack-based buffer overflow in Windows Fast FAT Driver allows an authorized attacker to elevate privileges over a network.
Stack-based buffer overflow in Windows Fast FAT Driver allows an authorized attacker to elevate privileges over a network.
CVE-2026-68877High· 7.8Heap-based buffer overflow in Windows Storage Spaces Controller allows an authorized attacker to execute code locally.
Heap-based buffer overflow in Windows Storage Spaces Controller allows an authorized attacker to execute code locally.
CVE-2026-68876High· 8.0Heap-based buffer overflow in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate privileges over a network.
Heap-based buffer overflow in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate privileges over a network.
CVE-2026-68875High· 7.8Buffer over-read in Windows NTFS allows an authorized attacker to execute code locally.
Buffer over-read in Windows NTFS allows an authorized attacker to execute code locally.
CVE-2026-68874Medium· 5.7Out-of-bounds read in Windows Program Compatibility Assistant Service allows an authorized attacker to disclose information over a network.
Out-of-bounds read in Windows Program Compatibility Assistant Service allows an authorized attacker to disclose information over a network.
CVE-2026-68873Medium· 5.5Insertion of sensitive information into log file in Windows Program Compatibility Assistant Service allows an authorized attacker to disclose information locally.
Insertion of sensitive information into log file in Windows Program Compatibility Assistant Service allows an authorized attacker to disclose information locally.
CVE-2026-68852Medium· 5.5Use of uninitialized resource in Microsoft Account allows an authorized attacker to disclose information locally.
Use of uninitialized resource in Microsoft Account allows an authorized attacker to disclose information locally.
CVE-2026-68851Medium· 5.5Buffer over-read in Windows NTFS allows an authorized attacker to disclose information locally.
Buffer over-read in Windows NTFS allows an authorized attacker to disclose information locally.
CVE-2026-68850High· 7.8Heap-based buffer overflow in Microsoft Account allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Microsoft Account allows an authorized attacker to elevate privileges locally.
CVE-2026-68849Medium· 4.7Out-of-bounds read in Windows Bluetooth Port Driver allows an authorized attacker to disclose information locally.
Out-of-bounds read in Windows Bluetooth Port Driver allows an authorized attacker to disclose information locally.
CVE-2026-68848High· 7.8Heap-based buffer overflow in Windows Print Spooler Components allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows Print Spooler Components allows an authorized attacker to elevate privileges locally.
CVE-2026-68847High· 7.0Use after free in Windows Connected User Experiences and Telemetry allows an authorized attacker to elevate privileges locally.
Use after free in Windows Connected User Experiences and Telemetry allows an authorized attacker to elevate privileges locally.
CVE-2026-68846High· 7.1Use after free in Windows Kernel allows an authorized attacker to elevate privileges over a network.
Use after free in Windows Kernel allows an authorized attacker to elevate privileges over a network.
CVE-2026-68845High· 7.8Heap-based buffer overflow in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate privileges locally.
CVE-2026-68844High· 7.8Heap-based buffer overflow in Windows Storage Spaces Controller allows an authorized attacker to execute code locally.
Heap-based buffer overflow in Windows Storage Spaces Controller allows an authorized attacker to execute code locally.
CVE-2026-68843Medium· 5.5Use after free in Microsoft Office Word allows an authorized attacker to disclose information locally.
Use after free in Microsoft Office Word allows an authorized attacker to disclose information locally.
CVE-2026-68842Medium· 5.5Exposure of sensitive system information to an unauthorized control sphere in Windows MIDI Service Module allows an authorized attacker to disclose information locally.
Exposure of sensitive system information to an unauthorized control sphere in Windows MIDI Service Module allows an authorized attacker to disclose information locally.
CVE-2026-68841High· 7.8Heap-based buffer overflow in Windows NTFS allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows NTFS allows an authorized attacker to elevate privileges locally.
CVE-2026-68840High· 7.0Concurrent execution using shared resource with improper synchronization ('race condition') in Windows USB Driver allows an authorized attacker to elevate privileges locally.
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows USB Driver allows an authorized attacker to elevate privileges locally.
CVE-2026-68839Critical· 9.8Heap-based buffer overflow in Windows USB Mass Storage Class Driver allows an unauthorized attacker to execute code over a network.
Heap-based buffer overflow in Windows USB Mass Storage Class Driver allows an unauthorized attacker to execute code over a network.
CVE-2026-68838High· 8.0Stack-based buffer overflow in Windows NTFS allows an authorized attacker to elevate privileges over a network.
Stack-based buffer overflow in Windows NTFS allows an authorized attacker to elevate privileges over a network.
CVE-2026-68837High· 7.0Use after free in Windows File History Service allows an authorized attacker to elevate privileges locally.
Use after free in Windows File History Service allows an authorized attacker to elevate privileges locally.
CVE-2026-68835High· 7.1Use after free in Windows Print Spooler Components allows an authorized attacker to elevate privileges over a network.
Use after free in Windows Print Spooler Components allows an authorized attacker to elevate privileges over a network.
CVE-2026-68834High· 8.0Stack-based buffer overflow in Windows NTFS allows an authorized attacker to elevate privileges over a network.
Stack-based buffer overflow in Windows NTFS allows an authorized attacker to elevate privileges over a network.