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-2026-32165High· 7.8Use after free in Windows User Interface Core allows an authorized attacker to elevate privileges locally.
Use after free in Windows User Interface Core allows an authorized attacker to elevate privileges locally.
CVE-2026-32195High· 7.0Windows Kernel Elevation of Privilege Vulnerability
Stack-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.
CVE-2026-32184High· 7.8Microsoft High Performance Compute (HPC) Pack Elevation of Privilege Vulnerability
Deserialization of untrusted data in Microsoft High Performance Compute Pack (HPC) allows an authorized attacker to elevate privileges locally.
CVE-2026-32168High· 7.8Azure Monitor Agent Elevation of Privilege Vulnerability
Improper input validation in Azure Monitor Agent allows an authorized attacker to elevate privileges locally.
CVE-2026-32219High· 7.0Microsoft Brokering File System Elevation of Privilege Vulnerability
Double free in Microsoft Brokering File System allows an authorized attacker to elevate privileges locally.
CVE-2026-32189High· 7.8Microsoft Excel Remote Code Execution Vulnerability
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-32188High· 7.1Microsoft Excel Information Disclosure Vulnerability
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
CVE-2026-32216Medium· 5.5Windows Redirected Drive Buffering System Denial of Service Vulnerability
Null pointer dereference in Windows Redirected Drive Buffering allows an authorized attacker to deny service locally.
CVE-2026-32215Medium· 5.5Insertion of sensitive information into log file in Windows Kernel allows an authorized attacker to disclose information locally.
Insertion of sensitive information into log file in Windows Kernel allows an authorized attacker to disclose information locally.
CVE-2026-32192High· 7.8Azure Monitor Agent Elevation of Privilege Vulnerability
Deserialization of untrusted data in Azure Monitor Agent allows an authorized attacker to elevate privileges locally.
CVE-2026-33098High· 7.8Use after free in Windows Container Isolation FS Filter Driver allows an authorized attacker to elevate privileges locally.
Use after free in Windows Container Isolation FS Filter Driver allows an authorized attacker to elevate privileges locally.
CVE-2026-32218Medium· 5.5Insertion of sensitive information into log file in Windows Kernel allows an authorized attacker to disclose information locally.
Insertion of sensitive information into log file in Windows Kernel allows an authorized attacker to disclose information locally.
CVE-2026-33120High· 8.8Microsoft SQL Server Remote Code Execution Vulnerability
Untrusted pointer dereference in SQL Server allows an authorized attacker to execute code over a network.
CVE-2026-33096High· 7.5Out-of-bounds read in Windows HTTP.sys allows an unauthorized attacker to deny service over a network.
Out-of-bounds read in Windows HTTP.sys allows an unauthorized attacker to deny service over a network.
CVE-2026-33826High· 8.0PoCWindows Active Directory Remote Code Execution Vulnerability
Improper input validation in Windows Active Directory allows an authorized attacker to execute code over an adjacent network.
CVE-2026-33822Medium· 6.1Microsoft Word Information Disclosure Vulnerability
Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information locally.
CVE-2026-33095High· 7.8Microsoft Word Remote Code Execution Vulnerability
Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally.
CVE-2026-33825High· 7.8CISA KEVPoCMicrosoft Defender Elevation of Privilege Vulnerability
Insufficient granularity of access control in Microsoft Defender allows an authorized attacker to elevate privileges locally.
CVE-2026-32212Medium· 5.5Improper link resolution before file access ('link following') in Universal Plug and Play (upnp.dll) allows an authorized attacker to disclose information locally.
Improper link resolution before file access ('link following') in Universal Plug and Play (upnp.dll) allows an authorized attacker to disclose information locally.
CVE-2026-20806Medium· 5.5Access of resource using incompatible type ('type confusion') in Windows COM allows an authorized attacker to disclose information locally.
Access of resource using incompatible type ('type confusion') in Windows COM allows an authorized attacker to disclose information locally.
CVE-2026-23657High· 7.8Microsoft Word Remote Code Execution Vulnerability
Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally.
CVE-2026-20928Medium· 4.6Improper removal of sensitive information before storage or transfer in Windows Recovery Environment Agent allows an unauthorized attacker to bypass a security feature with a physical attack.
Improper removal of sensitive information before storage or transfer in Windows Recovery Environment Agent allows an unauthorized attacker to bypass a security feature with a physical attack.
CVE-2026-26152High· 7.0Insecure storage of sensitive information in Windows Cryptographic Services allows an authorized attacker to elevate privileges locally.
Insecure storage of sensitive information in Windows Cryptographic Services allows an authorized attacker to elevate privileges locally.
CVE-2026-26143High· 7.8Microsoft PowerShell Security Feature Bypass Vulnerability
Improper input validation in Microsoft PowerShell allows an unauthorized attacker to bypass a security feature locally.
CVE-2026-23666High· 7.5.NET Framework Denial of Service Vulnerability
Improper input validation in .NET Framework allows an unauthorized attacker to deny service over a network.
CVE-2026-26159High· 7.8Missing authentication for critical function in Windows Remote Desktop Licensing Service allows an authorized attacker to elevate privileges locally.
Missing authentication for critical function in Windows Remote Desktop Licensing Service allows an authorized attacker to elevate privileges locally.
CVE-2026-26156High· 7.8Heap-based buffer overflow in Windows Hyper-V allows an unauthorized attacker to execute code locally.
Heap-based buffer overflow in Windows Hyper-V allows an unauthorized attacker to execute code locally.
CVE-2026-26153High· 7.8Out-of-bounds read in Windows Encrypting File System (EFS) allows an authorized attacker to elevate privileges locally.
Out-of-bounds read in Windows Encrypting File System (EFS) allows an authorized attacker to elevate privileges locally.
CVE-2026-26173High· 7.0Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
CVE-2026-26169Medium· 6.1Buffer over-read in Windows Kernel Memory allows an authorized attacker to disclose information locally.
Buffer over-read in Windows Kernel Memory allows an authorized attacker to disclose information locally.