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-2026-50657Medium· 4.7PoCMicrosoft Defender for Endpoint for Mac Information Disclosure Vulnerability
Exposure of private personal information to an unauthorized actor in Microsoft Defender allows an authorized attacker to disclose information locally.
CVE-2026-50647High· 7.5Active Directory Federation Server Denial of Service Vulnerability
Loop with unreachable exit condition ('infinite loop') in Active Directory Federation Services (AD FS) allows an unauthorized attacker to deny service over a network.
CVE-2026-54121High· 8.8PoCActive Directory Certificate Services Elevation of Privilege Vulnerability
Improper authorization in Active Directory Certificate Services (AD CS) allows an authorized attacker to elevate privileges over a network.
CVE-2026-54115High· 7.8Windows Message Queuing (MSMQ) Elevation of Privilege Vulnerability
Integer overflow or wraparound in Windows Active Directory allows an authorized attacker to elevate privileges locally.
CVE-2026-50690Medium· 5.5Windows SMB Information Disclosure Vulnerability
Use of uninitialized resource in Windows SMB allows an authorized attacker to disclose information locally.
CVE-2026-50688High· 7.8Windows Win32k Elevation of Privilege Vulnerability
Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
CVE-2026-50685High· 7.5Windows DHCP Server Remote Code Execution Vulnerability
Double free in Windows DHCP Server allows an authorized attacker to execute code over a network.
CVE-2026-50684Medium· 4.8Active Directory Federation Server Spoofing Vulnerability
Improper neutralization of input during web page generation ('cross-site scripting') in Active Directory Federation Services (AD FS) allows an authorized attacker to perform spoofing over a network.
CVE-2026-50681Medium· 5.5Windows Secure Channel Information Disclosure Vulnerability
Exposure of sensitive information to an unauthorized actor in Windows Cryptographic Services allows an authorized attacker to disclose information locally.
CVE-2026-50680High· 8.2Windows Hyper-V Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to elevate privileges locally.
CVE-2026-50679High· 7.8PoCWindows Search Service Elevation of Privilege Vulnerability
Heap-based buffer overflow in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.
CVE-2026-50677High· 7.8Windows Media Elevation of Privilege Vulnerability
Use after free in Windows Media allows an authorized attacker to elevate privileges locally.
CVE-2026-50676High· 7.8Windows Media Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Media allows an authorized attacker to elevate privileges locally.
CVE-2026-50674High· 7.0Windows USB Print Driver Elevation of Privilege Vulnerability
Use after free in Windows USB Print Driver allows an authorized attacker to elevate privileges locally.
CVE-2026-50673High· 7.8Windows Kernel Elevation of Privilege Vulnerability
Null pointer dereference in Windows Kernel allows an authorized attacker to elevate privileges locally.
CVE-2026-50672High· 7.0Windows NTFS Elevation of Privilege Vulnerability
Use after free in Windows NTFS allows an authorized attacker to elevate privileges locally.
CVE-2026-50670High· 8.8Windows Win32k Elevation of Privilege Vulnerability
Out-of-bounds read in Windows Kernel allows an authorized attacker to elevate privileges locally.
CVE-2026-50669High· 7.0Windows Telephony Server Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Telephony Service allows an authorized attacker to elevate privileges locally.
CVE-2026-50668Medium· 6.8Windows Resilient File System (ReFS) Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to elevate privileges with a physical attack.
CVE-2026-50667High· 7.8Windows Common Log File System Driver Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows NTFS allows an authorized attacker to elevate privileges locally.
CVE-2026-50666High· 8.8Windows Remote Access Elevation of Privilege Vulnerability
Use after free in Windows Remote Access Connection Manager allows an authorized attacker to elevate privileges over a network.
CVE-2026-50655High· 7.8Microsoft Windows Media Foundation Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows Media allows an unauthorized attacker to execute code locally.
CVE-2026-55024High· 7.8Microsoft Excel Remote Code Execution Vulnerability
Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-55023Medium· 5.5Microsoft Office Information Disclosure Vulnerability
Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.
CVE-2026-55019Medium· 4.6Microsoft SharePoint Server Spoofing Vulnerability
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-2026-55017High· 7.8Microsoft Office Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
CVE-2026-55016Medium· 4.6Microsoft SharePoint Server Spoofing Vulnerability
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-2026-55010Critical· 9.8Minecraft Bedrock Dedicated Server Remote Code Execution Vulnerability
Heap-based buffer overflow in Minecraft Bedrock Dedicated Server allows an unauthorized attacker to execute code over a network.
CVE-2026-54128High· 8.4Windows DHCP Client Remote Code Execution Vulnerability
Use after free in Windows DHCP Client allows an unauthorized attacker to execute code locally.
CVE-2026-54126Medium· 6.5Windows Remote Desktop Protocol (RDP) Information Disclosure Vulnerability
Out-of-bounds read in Windows RDP allows an unauthorized attacker to disclose information over a network.