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-2026-69629High· 8.8Heap-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.
Heap-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.
CVE-2026-69628High· 8.8Heap-based buffer overflow in Windows iSCSI allows an authorized attacker to execute code over a network.
Heap-based buffer overflow in Windows iSCSI allows an authorized attacker to execute code over a network.
CVE-2026-69627Medium· 5.5Out-of-bounds read in Windows Remote Desktop Licensing Service allows an authorized attacker to disclose information locally.
Out-of-bounds read in Windows Remote Desktop Licensing Service allows an authorized attacker to disclose information locally.
CVE-2026-69626Medium· 6.5Buffer over-read in Microsoft Office allows an unauthorized attacker to disclose information over a network.
Buffer over-read in Microsoft Office allows an unauthorized attacker to disclose information over a network.
CVE-2026-69625High· 8.0Heap-based buffer overflow in Windows Connected User Experiences and Telemetry allows an authorized attacker to elevate privileges over a network.
Heap-based buffer overflow in Windows Connected User Experiences and Telemetry allows an authorized attacker to elevate privileges over a network.
CVE-2026-69624Medium· 6.5Incomplete list of disallowed inputs in Active Directory Certificate Services (AD CS) allows an authorized attacker to perform tampering over a network.
Incomplete list of disallowed inputs in Active Directory Certificate Services (AD CS) allows an authorized attacker to perform tampering over a network.
CVE-2026-69623High· 8.0Heap-based buffer overflow in Windows HTTP Print Provider allows an authorized attacker to execute code over a network.
Heap-based buffer overflow in Windows HTTP Print Provider allows an authorized attacker to execute code over a network.
CVE-2026-69621High· 7.0Heap-based buffer overflow in Windows Fax Service allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows Fax Service allows an authorized attacker to elevate privileges locally.
CVE-2026-69620High· 8.1Stack-based buffer overflow in Windows DHCP Server allows an unauthorized attacker to execute code over a network.
Stack-based buffer overflow in Windows DHCP Server allows an unauthorized attacker to execute code over a network.
CVE-2026-69619High· 8.0Out-of-bounds read in Windows exFAT File System allows an authorized attacker to elevate privileges over a network.
Out-of-bounds read in Windows exFAT File System allows an authorized attacker to elevate privileges over a network.
CVE-2026-69618Medium· 5.5Out-of-bounds read in Windows SMB Client allows an authorized attacker to disclose information locally.
Out-of-bounds read in Windows SMB Client allows an authorized attacker to disclose information locally.
CVE-2026-69617High· 7.0Out-of-bounds read in Windows Resilient File System (ReFS) allows an authorized attacker to elevate privileges locally.
Out-of-bounds read in Windows Resilient File System (ReFS) allows an authorized attacker to elevate privileges locally.
CVE-2026-69616Medium· 5.5Out-of-bounds read in Windows Remote Desktop Services allows an authorized attacker to disclose information locally.
Out-of-bounds read in Windows Remote Desktop Services allows an authorized attacker to disclose information locally.
CVE-2026-69615Low· 3.5Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
CVE-2026-69614High· 8.8Stack-based buffer overflow in Microsoft Office Access allows an unauthorized attacker to execute code over a network.
Stack-based buffer overflow in Microsoft Office Access allows an unauthorized attacker to execute code over a network.
CVE-2026-69613High· 7.0Use after free in Windows Image Acquisition allows an authorized attacker to elevate privileges locally.
Use after free in Windows Image Acquisition allows an authorized attacker to elevate privileges locally.
CVE-2026-69612High· 7.8Absolute path traversal in Windows Error Reporting allows an authorized attacker to elevate privileges locally.
Absolute path traversal in Windows Error Reporting allows an authorized attacker to elevate privileges locally.
CVE-2026-69611High· 7.0Use after free in Virtual Hard Disk (VHD) Miniport Driver allows an authorized attacker to elevate privileges locally.
Use after free in Virtual Hard Disk (VHD) Miniport Driver allows an authorized attacker to elevate privileges locally.
CVE-2026-69610High· 7.0Buffer over-read in Windows Win32K allows an authorized attacker to elevate privileges locally.
Buffer over-read in Windows Win32K allows an authorized attacker to elevate privileges locally.
CVE-2026-69609Medium· 5.5Out-of-bounds read in Windows Win32K allows an authorized attacker to disclose information locally.
Out-of-bounds read in Windows Win32K allows an authorized attacker to disclose information locally.
CVE-2026-69608High· 7.8Integer overflow or wraparound in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.
Integer overflow or wraparound in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.
CVE-2026-69607High· 7.5Use after free in Windows Deployment Services allows an unauthorized attacker to execute code over a network.
Use after free in Windows Deployment Services allows an unauthorized attacker to execute code over a network.
CVE-2026-69606High· 7.0Use after free in Windows Shell allows an authorized attacker to elevate privileges locally.
Use after free in Windows Shell allows an authorized attacker to elevate privileges locally.
CVE-2026-69605High· 7.0Use after free in Microsoft Install Service allows an authorized attacker to elevate privileges locally.
Use after free in Microsoft Install Service allows an authorized attacker to elevate privileges locally.
CVE-2026-69604High· 7.8Heap-based buffer overflow in Windows Audio Service allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows Audio Service allows an authorized attacker to elevate privileges locally.
CVE-2026-69603High· 8.8Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to execute code locally.
Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to execute code locally.
CVE-2026-69602High· 7.1Use after free in Windows PrintWorkflowUserSvc allows an authorized attacker to elevate privileges over a network.
Use after free in Windows PrintWorkflowUserSvc allows an authorized attacker to elevate privileges over a network.
CVE-2026-69601High· 8.8Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code over a network.
Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code over a network.
CVE-2026-69600High· 7.0Use after free in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.
Use after free in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.
CVE-2026-69599High· 7.5Use after free in Windows Remote Desktop Services allows an authorized attacker to execute code over a network.
Use after free in Windows Remote Desktop Services allows an authorized attacker to execute code over a network.