microsoft has 2,953 CVEs on record between 2013 and 2026. Disclosure cadence is accelerating: 2136 in the last 90 days against 414 in the 90 before. The busiest recent month was September 2026 with 1005. The median CVSS is 7.8 (high), with 178 rated critical. 3% have been exploited in the wild, in line with the corpus average. The median gap from publication to a KEV listing is 113 days (91 cases). The dominant weakness classes are CWE-122 (585) and CWE-416 (512). Most affected products: windows_10_1607 (644), Windows 10 Version 1607 (481), Microsoft 365 Apps for Enterprise (209).
CVEs per month
Last 12 months, by publish date
- Exploited share
- 3% vs 1% corpus
- Median CVSS
- 7.8
- Publish → KEV
- 113 d median(91)
- Last 90 days
- 2136 prev 414
Weakness classes
Products
- windows_10_1607 644
- Windows 10 Version 1607 481
- Microsoft 365 Apps for Enterprise 209
- windows_10 122
- 365_apps 115
- windows_10_1809 106
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.
2953 CVEsRSS
CVE-2026-56157Medium· 5.4Microsoft SharePoint Server Spoofing Vulnerability
Improper access control in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
CVE-2026-56156High· 7.8Microsoft Excel Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-55949High· 7.8Microsoft Excel Remote Code Execution Vulnerability
Use of uninitialized resource in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-55947High· 7.8Microsoft Excel Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-55944Critical· 9.8Microsoft Dynamics NAV and Microsoft Dynamics 365 Business Central (On Premises) Remote Code Execution Vulnerability
Deserialization of untrusted data in Microsoft Dynamics NAV allows an unauthorized attacker to execute code over a network.
CVE-2026-55898Medium· 6.1Microsoft Excel Information Disclosure Vulnerability
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
CVE-2026-54131High· 7.8Microsoft Excel Remote Code Execution Vulnerability
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-50359High· 7.0Microsoft XML Core Services Elevation of Privilege Vulnerability
Use after free in Microsoft XML Core Services allows an authorized attacker to elevate privileges locally.
CVE-2026-56190Critical· 9.8Remote Desktop Protocol Remote Code Execution Vulnerability
Use of uninitialized resource in Windows RDP allows an unauthorized attacker to execute code over a network.
CVE-2026-56188Critical· 9.8Windows Server Network driver Remote Code Execution Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Server Network driver allows an unauthorized attacker to execute code over a network.
CVE-2026-56187High· 7.0Windows MIDI Service Module Elevation of Privileges Vulnerability
Use after free in Windows MIDI Service Module allows an authorized attacker to elevate privileges locally.
CVE-2026-56186High· 8.1Windows Secure Channel Information Disclosure Vulnerability
Out-of-bounds read in Windows Schannel allows an authorized attacker to disclose information over a network.
CVE-2026-56184Medium· 5.5Win32k Information Disclosure Vulnerability
Exposure of sensitive information to an unauthorized actor in Windows Win32K allows an authorized attacker to disclose information locally.
CVE-2026-56183High· 7.0Windows MIDI Service Module Elevation of Privileges Vulnerability
Use after free in Windows MIDI Service Module allows an authorized attacker to elevate privileges locally.
CVE-2026-56182High· 7.8Windows NTFS Elevation of Privilege Vulnerability
Integer overflow or wraparound in Windows NTFS allows an authorized attacker to elevate privileges locally.
CVE-2026-56175High· 7.8Windows NTFS Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows NTFS allows an authorized attacker to elevate privileges locally.
CVE-2026-56173High· 7.0Windows WebView Elevation of Privilege Vulnerability
Use after free in Windows WebView allows an authorized attacker to elevate privileges locally.
CVE-2026-56168Medium· 6.5Windows SMB Server Denial of Service Vulnerability
Null pointer dereference in Windows SMB Server allows an authorized attacker to deny service over a network.
CVE-2026-56159Critical· 9.8DHCP Server Service Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows DHCP Server allows an unauthorized attacker to execute code over a network.
CVE-2026-56644High· 7.8DirectX Graphics Kernel Elevation of Privilege Vulnerability
Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
CVE-2026-56643High· 7.8DirectX Graphics Kernel Elevation of Privilege Vulnerability
Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
CVE-2026-56642High· 8.8Microsoft Fabric Data Warehouse Remote Code Execution Vulnerability
Stack-based buffer overflow in Microsoft Fabric Data Warehouse allows an authorized attacker to execute code over a network.
CVE-2026-56197High· 8.8Windows Admin Center (WAC) Remote Code Execution Vulnerability
Improper neutralization of special elements used in a command ('command injection') in Windows Admin Center allows an authorized attacker to execute code over a network.
CVE-2026-56196High· 8.8Windows Admin Center (WAC) Remote Code Execution Vulnerability
Relative path traversal in Windows Admin Center allows an authorized attacker to execute code over a network.
CVE-2026-56195Medium· 5.5Microsoft Office Information Disclosure Vulnerability
Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.
CVE-2026-56194High· 8.8Windows NFS Server Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Network File System allows an authorized attacker to elevate privileges over a network.
CVE-2026-56192Medium· 5.5Microsoft Office Information Disclosure Vulnerability
Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.
CVE-2026-56189High· 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-2026-56178Medium· 5.5Microsoft Defender for Endpoint for Mac Elevation of Privilege Vulnerability
Time-of-check time-of-use (toctou) race condition in Microsoft Defender for Endpoint allows an authorized attacker to elevate privileges locally.
CVE-2026-54124High· 7.8Windows Terminal Remote Code Execution Vulnerability
Integer overflow or wraparound in Windows Terminal allows an unauthorized attacker to execute code locally.