microsoft has 4,599 CVEs on record between 2012 and 2026. Disclosure cadence is accelerating: 2930 in the last 90 days against 934 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 934
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-2026-70247High· 7.8Out-of-bounds read in Windows HTTP.sys allows an authorized attacker to execute code locally.
Out-of-bounds read in Windows HTTP.sys allows an authorized attacker to execute code locally.
CVE-2026-70246High· 8.8Incorrect authorization in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.
Incorrect authorization in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.
CVE-2026-70245High· 7.8Access of resource using incompatible type ('type confusion') in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
Access of resource using incompatible type ('type confusion') in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
CVE-2026-70244Medium· 6.5Out-of-bounds read in DNS Server allows an unauthorized attacker to disclose information over a network.
Out-of-bounds read in DNS Server allows an unauthorized attacker to disclose information over a network.
CVE-2026-70243High· 7.0Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
CVE-2026-70242Critical· 9.8Heap-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-2026-70241High· 7.0Use after free in Windows Kerberos allows an authorized attacker to elevate privileges locally.
Use after free in Windows Kerberos allows an authorized attacker to elevate privileges locally.
CVE-2026-70238High· 7.8Heap-based buffer overflow in Windows Storage Spaces Controller allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows Storage Spaces Controller allows an authorized attacker to elevate privileges locally.
CVE-2026-70237High· 7.0Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
CVE-2026-70236High· 7.0Use after free in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.
Use after free in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.
CVE-2026-70235Medium· 5.5Improper authentication in Windows Event Tracing allows an authorized attacker to perform spoofing locally.
Improper authentication in Windows Event Tracing allows an authorized attacker to perform spoofing locally.
CVE-2026-70234Medium· 5.5Buffer over-read in Desktop Window Manager allows an authorized attacker to disclose information locally.
Buffer over-read in Desktop Window Manager allows an authorized attacker to disclose information locally.
CVE-2026-70233High· 7.8Heap-based buffer overflow in Windows Common Log File System Driver allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows Common Log File System Driver allows an authorized attacker to elevate privileges locally.
CVE-2026-70232Medium· 5.5Exposure of sensitive system information to an unauthorized control sphere in Windows Kernel allows an authorized attacker to disclose information locally.
Exposure of sensitive system information to an unauthorized control sphere in Windows Kernel allows an authorized attacker to disclose information locally.
CVE-2026-70230High· 7.0Use after free in Windows Audio Service allows an authorized attacker to elevate privileges locally.
Use after free in Windows Audio Service allows an authorized attacker to elevate privileges locally.
CVE-2026-70229High· 8.1Incorrect authorization in Active Directory Domain Services allows an unauthorized attacker to execute code over a network.
Incorrect authorization in Active Directory Domain Services allows an unauthorized attacker to execute code over a network.
CVE-2026-70228High· 7.8Out-of-bounds read in Desktop Window Manager allows an authorized attacker to elevate privileges locally.
Out-of-bounds read in Desktop Window Manager allows an authorized attacker to elevate privileges locally.
CVE-2026-70227Medium· 5.5Out-of-bounds read in Windows Device Association Service allows an authorized attacker to disclose information locally.
Out-of-bounds read in Windows Device Association Service allows an authorized attacker to disclose information locally.
CVE-2026-70225High· 7.8Access of resource using incompatible type ('type confusion') in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
Access of resource using incompatible type ('type confusion') in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
CVE-2026-70223High· 7.0Use after free in Windows Console Driver allows an authorized attacker to elevate privileges locally.
Use after free in Windows Console Driver allows an authorized attacker to elevate privileges locally.
CVE-2026-70222High· 7.8Relative path traversal in Windows Shell allows an authorized attacker to elevate privileges locally.
Relative path traversal in Windows Shell allows an authorized attacker to elevate privileges locally.
CVE-2026-70220High· 7.8Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code locally.
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code locally.
CVE-2026-70219Medium· 6.5Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.
CVE-2026-70218High· 7.8Insufficient granularity of access control in Windows StateRepository API allows an authorized attacker to elevate privileges locally.
Insufficient granularity of access control in Windows StateRepository API allows an authorized attacker to elevate privileges locally.
CVE-2026-70217Medium· 4.9Improper access control in Microsoft Office SharePoint allows an authorized attacker to disclose information over a network.
Improper access control in Microsoft Office SharePoint allows an authorized attacker to disclose information over a network.
CVE-2026-70216Medium· 5.5Insufficient granularity of access control in Windows Mobile Device Management allows an authorized attacker to perform tampering locally.
Insufficient granularity of access control in Windows Mobile Device Management allows an authorized attacker to perform tampering locally.
CVE-2026-70215High· 8.8Use after free in Microsoft Office PowerPoint allows an unauthorized attacker to execute code over a network.
Use after free in Microsoft Office PowerPoint allows an unauthorized attacker to execute code over a network.
CVE-2026-70214Medium· 5.5Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
CVE-2026-70213High· 8.0Origin validation error in Microsoft Power Apps allows an authorized attacker to execute code over a network.
Origin validation error in Microsoft Power Apps allows an authorized attacker to execute code over a network.
CVE-2026-70212High· 7.0Improper restriction of communication channel to intended endpoints in Windows Security Center allows an authorized attacker to elevate privileges locally.
Improper restriction of communication channel to intended endpoints in Windows Security Center allows an authorized attacker to elevate privileges locally.