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-2026-59124Critical· 9.8Deserialization of untrusted data in Microsoft High Performance Computing (HPC) Pack allows an unauthorized attacker to execute code over a network.
Deserialization of untrusted data in Microsoft High Performance Computing (HPC) Pack allows an unauthorized attacker to execute code over a network.
CVE-2026-59122High· 7.0Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Telephony Service allows an authorized attacker to elevate privileges locally.
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Telephony Service allows an authorized attacker to elevate privileges locally.
CVE-2026-57104High· 8.8Improper neutralization of input during web page generation ('cross-site scripting') in Azure Storage Explorer allows an unauthorized attacker to elevate privileges over a network.
Improper neutralization of input during web page generation ('cross-site scripting') in Azure Storage Explorer allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-56174High· 7.8Untrusted search path in Windows Narrator Braille allows an authorized attacker to elevate privileges locally.
Untrusted search path in Windows Narrator Braille allows an authorized attacker to elevate privileges locally.
CVE-2026-54984High· 7.8PoCHeap-based buffer overflow in Windows Imaging Component allows an unauthorized attacker to execute code locally.
Heap-based buffer overflow in Windows Imaging Component allows an unauthorized attacker to execute code locally.
CVE-2026-54113High· 7.5Allocation of resources without limits or throttling in Windows Kernel allows an unauthorized attacker to deny service over a network.
Allocation of resources without limits or throttling in Windows Kernel allows an unauthorized attacker to deny service over a network.
CVE-2026-50472High· 7.0Heap-based buffer overflow in Windows LUAFV allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows LUAFV allows an authorized attacker to elevate privileges locally.
CVE-2026-49179High· 8.8PoCImproper neutralization of special elements used in a command ('command injection') in Windows Active Directory allows an unauthorized attacker to execute code over a network.
Improper neutralization of special elements used in a command ('command injection') in Windows Active Directory allows an unauthorized attacker to execute code over a network.
CVE-2026-42976High· 7.8Missing authentication for critical function in Windows RPC API allows an authorized attacker to elevate privileges locally.
Missing authentication for critical function in Windows RPC API allows an authorized attacker to elevate privileges locally.
CVE-2026-65767High· 8.8Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Teams for Android allows an authorized attacker to perform spoofing over a network.
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Teams for Android allows an authorized attacker to perform spoofing over a network.
CVE-2026-65769Medium· 6.5Exposure of sensitive information to an unauthorized actor in Microsoft Teams Mobile allows an unauthorized attacker to disclose information over a network.
Exposure of sensitive information to an unauthorized actor in Microsoft Teams Mobile allows an unauthorized attacker to disclose information over a network.
CVE-2026-62902Medium· 6.5.NET Information Disclosure Vulnerability
Inclusion of functionality from untrusted control sphere in .NET allows an unauthorized attacker to disclose information over a network.
CVE-2026-62901High· 7.5.NET Denial of Service Vulnerability
Unchecked input for loop condition in .NET allows an unauthorized attacker to deny service over a network.
CVE-2026-62886High· 7.8Integer overflow or wraparound in .NET allows an unauthorized attacker to elevate privileges locally.
Integer overflow or wraparound in .NET allows an unauthorized attacker to elevate privileges locally.
CVE-2026-62909High· 7.8.NET Elevation of Privilege Vulnerability
Uncaught exception in .NET allows an authorized attacker to elevate privileges locally.
CVE-2026-70354High· 7.8.NET Core Remote Code Execution Vulnerability
Out-of-bounds write in .NET allows an unauthorized attacker to execute code locally.
CVE-2026-62897High· 7.0.NET Framework Remote Code Execution Vulnerability
Integer overflow or wraparound in .NET Framework allows an unauthorized attacker to execute code locally.
CVE-2026-62871High· 7.8.NET Elevation of Privilege Vulnerability
Out-of-bounds write in .NET allows an unauthorized attacker to execute code locally.
CVE-2026-62898High· 7.5Microsoft QUIC Information Disclosure Vulnerability
Use after free in Microsoft QUIC allows an unauthorized attacker to disclose information over a network.
CVE-2026-62899Medium· 5.9.NET Security Feature Bypass Vulnerability
Inconsistent interpretation of http requests ('http request/response smuggling') in .NET allows an unauthorized attacker to bypass a security feature over a network.
CVE-2026-62836High· 8.7Improper restriction of communication channel to intended endpoints in Azure SQL Managed Instance allows an unauthorized attacker to elevate privileges over a network.
Improper restriction of communication channel to intended endpoints in Azure SQL Managed Instance allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-56162Critical· 10.0Improper authentication in Azure SQL Database allows an unauthorized attacker to elevate privileges over a network.
Improper authentication in Azure SQL Database allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-70332Critical· 9.6Microsoft Office SharePoint Spoofing Vulnerability
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.
CVE-2026-65668High· 8.8Microsoft Purview eDiscovery Elevation of Privilege Vulnerability
Improper access control in Microsoft Purview eDiscovery allows an authorized attacker to elevate privileges over a network.
CVE-2026-63508Critical· 10.0Microsoft Planetary Computer Pro Elevation of Privilege Vulnerability
Missing authentication for critical function in Microsoft Planetary Computer Pro allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-62918High· 7.5Microsoft Teams Spoofing Vulnerability
Improper verification of cryptographic signature in Microsoft Teams allows an unauthorized attacker to perform spoofing over a network.
CVE-2026-62896Critical· 9.6Microsoft Teams Elevation of Privilege Vulnerability
Improper authentication in Microsoft Teams allows an authorized attacker to elevate privileges over a network.
CVE-2026-59115Critical· 9.9Microsoft Entra Provisioning Service Elevation of Privilege Vulnerability
'.../...//' in Microsoft Entra Provisioning Service (SyncFabric) allows an authorized attacker to elevate privileges over a network.
CVE-2026-50515Critical· 9.9Azure Service Bus Remote Code Execution Vulnerability
Deserialization of untrusted data in Azure Service Bus allows an authorized attacker to execute code over a network.
CVE-2026-50481Critical· 9.9Azure Active Directory Elevation of Privilege Vulnerability
Modification of assumed-immutable data (maid) in Azure Active Directory allows an authorized attacker to elevate privileges over a network.