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-2026-50651High· 7.5.NET Denial of Service Vulnerability
Allocation of resources without limits or throttling in .NET allows an unauthorized attacker to deny service over a network.
CVE-2026-57108High· 7.5.NET Denial of Service Vulnerability
Access of resource using incompatible type ('type confusion') in .NET Core allows an unauthorized attacker to deny service over a network.
CVE-2026-47302High· 7.5.NET Denial of Service Vulnerability
Allocation of resources without limits or throttling in .NET allows an unauthorized attacker to deny service over a network.
CVE-2026-49791High· 7.1Improper link resolution before file access ('link following') in Windows Routing and Remote Access Service (RRAS) allows an authorized attacker to elevate privileges locally.
Improper link resolution before file access ('link following') in Windows Routing and Remote Access Service (RRAS) allows an authorized attacker to elevate privileges locally.
CVE-2026-57094High· 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-2026-57093High· 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-2026-57092Critical· 9.9Use after free in Windows VMSwitch allows an authorized attacker to elevate privileges over a network.
Use after free in Windows VMSwitch allows an authorized attacker to elevate privileges over a network.
CVE-2026-57091High· 7.8Stack-based buffer overflow in Windows File History Service allows an authorized attacker to elevate privileges locally.
Stack-based buffer overflow in Windows File History Service allows an authorized attacker to elevate privileges locally.
CVE-2026-57090High· 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-2026-57089High· 7.5Use after free in Windows SMB Server Network Transport Driver (srvnet.sys) allows an unauthorized attacker to execute code over a network.
Use after free in Windows SMB Server Network Transport Driver (srvnet.sys) allows an unauthorized attacker to execute code over a network.
CVE-2026-57088High· 7.8Improper access control in Extensible Storage Engine (ESENT) allows an authorized attacker to elevate privileges locally.
Improper access control in Extensible Storage Engine (ESENT) allows an authorized attacker to elevate privileges locally.
CVE-2026-57087High· 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-2026-57085Medium· 5.5Out-of-bounds read in Windows Print Spooler Components allows an authorized attacker to disclose information locally.
Out-of-bounds read in Windows Print Spooler Components allows an authorized attacker to disclose information locally.
CVE-2026-57084Medium· 5.5Use of uninitialized resource in Windows File Explorer allows an unauthorized attacker to disclose information locally.
Use of uninitialized resource in Windows File Explorer allows an unauthorized attacker to disclose information locally.
CVE-2026-57083Medium· 5.5Use of uninitialized resource in Microsoft Windows Codecs Library allows an unauthorized attacker to disclose information locally.
Use of uninitialized resource in Microsoft Windows Codecs Library allows an unauthorized attacker to disclose information locally.
CVE-2026-56650High· 7.8Heap-based buffer overflow in Windows Network File System allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows Network File System allows an authorized attacker to elevate privileges locally.
CVE-2026-56649Medium· 5.9Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Network File System allows an unauthorized attacker to execute code over a network.
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Network File System allows an unauthorized attacker to execute code over a network.
CVE-2026-56648High· 7.5Time-of-check time-of-use (toctou) race condition in Windows Network File System allows an authorized attacker to elevate privileges over a network.
Time-of-check time-of-use (toctou) race condition in Windows Network File System allows an authorized attacker to elevate privileges over a network.
CVE-2026-56647High· 8.8Integer overflow or wraparound in Windows Remote Access Service Infrastructure allows an authorized attacker to elevate privileges over a network.
Integer overflow or wraparound in Windows Remote Access Service Infrastructure allows an authorized attacker to elevate privileges over a network.
CVE-2026-50479High· 7.8Untrusted pointer dereference in Windows USB Hub Driver allows an authorized attacker to elevate privileges locally.
Untrusted pointer dereference in Windows USB Hub Driver allows an authorized attacker to elevate privileges locally.
CVE-2026-50454High· 7.8Relative path traversal in Windows User Interface Core allows an authorized attacker to elevate privileges locally.
Relative path traversal in Windows User Interface Core allows an authorized attacker to elevate privileges locally.
CVE-2026-50411High· 7.5Stack-based buffer overflow in Active Directory Federation Services (AD FS) allows an unauthorized attacker to deny service over a network.
Stack-based buffer overflow in Active Directory Federation Services (AD FS) allows an unauthorized attacker to deny service over a network.
CVE-2026-50368High· 7.5Stack-based buffer overflow in Active Directory Federation Services allows an unauthorized attacker to deny service over a network.
Stack-based buffer overflow in Active Directory Federation Services allows an unauthorized attacker to deny service over a network.
CVE-2026-50355High· 7.5Stack-based buffer overflow in Active Directory Federation Services allows an unauthorized attacker to deny service over a network.
Stack-based buffer overflow in Active Directory Federation Services allows an unauthorized attacker to deny service over a network.
CVE-2026-50324Medium· 5.9Loop with unreachable exit condition ('infinite loop') in Active Directory Federation Services (AD FS) allows an unauthorized attacker to deny service over a network.
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-2026-50322High· 7.0Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Runtime allows an authorized attacker to elevate privileges locally.
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Runtime allows an authorized attacker to elevate privileges locally.
CVE-2026-50321High· 7.8Concurrent execution using shared resource with improper synchronization ('race condition') in Windows USB Driver allows an authorized attacker to elevate privileges locally.
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows USB Driver allows an authorized attacker to elevate privileges locally.
CVE-2026-50304High· 7.5Stack-based buffer overflow in Active Directory Federation Services allows an unauthorized attacker to deny service over a network.
Stack-based buffer overflow in Active Directory Federation Services allows an unauthorized attacker to deny service over a network.
CVE-2026-49177Medium· 5.5Out-of-bounds read in Windows TCP/IP allows an authorized attacker to disclose information locally.
Out-of-bounds read in Windows TCP/IP allows an authorized attacker to disclose information locally.
CVE-2026-58647High· 8.0Improper neutralization of input during web page generation ('cross-site scripting') in Power BI allows an authorized attacker to perform spoofing over a network.
Improper neutralization of input during web page generation ('cross-site scripting') in Power BI allows an authorized attacker to perform spoofing over a network.