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-2026-44799High· 7.5Remote Desktop Client Remote Code Execution Vulnerability
Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
CVE-2026-44802High· 7.8Windows DWM Core Library Elevation of Privilege Vulnerability
Use after free in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.
CVE-2026-42983High· 7.8Windows DWM Core Library Elevation of Privilege Vulnerability
Use after free in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.
CVE-2026-44801High· 7.5Remote Desktop Client Remote Code Execution Vulnerability
Use after free in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
CVE-2026-42985High· 8.8Remote Desktop Client Remote Code Execution Vulnerability
Use after free in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
CVE-2026-44812High· 7.8Windows Graphics Component Remote Code Execution Vulnerability
Integer overflow or wraparound in Windows Win32K - GRFX allows an unauthorized attacker to execute code locally.
CVE-2026-44803High· 7.8Windows Graphics Component Remote Code Execution Vulnerability
Integer overflow or wraparound in Windows Win32K - GRFX allows an unauthorized attacker to execute code locally.
CVE-2026-42987High· 8.1Windows Deployment Services (WDS) Remote Code Execution
Use after free in Windows Deployment Services allows an unauthorized attacker to execute code over a network.
CVE-2026-44813High· 7.8Windows DWM Core Library Elevation of Privilege Vulnerability
Use after free in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.
CVE-2026-44804High· 7.8Windows DWM Core Library Elevation of Privilege Vulnerability
Use after free in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.
CVE-2026-45639High· 7.5Windows Remote Desktop Protocol (RDP) Information Disclosure Vulnerability
Out-of-bounds read in Windows RDP allows an unauthorized attacker to disclose information over a network.
CVE-2026-42993High· 7.5Remote Desktop Client Remote Code Execution Vulnerability
Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
CVE-2026-44814Medium· 5.5Windows DWM Core Library Information Disclosure Vulnerability
Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to disclose information locally.
CVE-2026-42914Medium· 5.3Windows Kerberos Denial of Service Vulnerability
Out-of-bounds read in Windows Kerberos allows an authorized attacker to deny service over a network.
CVE-2026-47292High· 7.8Visual Studio Code MSSQL Extension Remote Code Execution Vulnerability
Inclusion of functionality from untrusted control sphere in Visual Studio Code allows an unauthorized attacker to elevate privileges locally.
CVE-2026-48566Medium· 5.5Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.
Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.
CVE-2026-42980High· 7.8PoCInteger underflow (wrap or wraparound) in Windows NT OS Kernel allows an authorized attacker to elevate privileges locally.
Integer underflow (wrap or wraparound) in Windows NT OS Kernel allows an authorized attacker to elevate privileges locally.
CVE-2026-47631High· 8.1Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.
CVE-2026-45583High· 7.5Improper control of generation of code ('code injection') in Microsoft Exchange Server allows an unauthorized attacker to execute code over a network.
Improper control of generation of code ('code injection') in Microsoft Exchange Server allows an unauthorized attacker to execute code over a network.
CVE-2026-45504High· 8.8PoCServer-side request forgery (ssrf) in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.
Server-side request forgery (ssrf) in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.
CVE-2026-45503High· 8.1Improper authorization in Microsoft Exchange Server allows an authorized attacker to disclose information over a network.
Improper authorization in Microsoft Exchange Server allows an authorized attacker to disclose information over a network.
CVE-2026-45502Medium· 5.0Server-side request forgery (ssrf) in Microsoft Exchange Server allows an authorized attacker to disclose information over a network.
Server-side request forgery (ssrf) in Microsoft Exchange Server allows an authorized attacker to disclose information over a network.
CVE-2026-45501Medium· 6.5Server-side request forgery (ssrf) in Microsoft Exchange Server allows an authorized attacker to perform spoofing over a network.
Server-side request forgery (ssrf) in Microsoft Exchange Server allows an authorized attacker to perform spoofing over a network.
CVE-2026-45500Medium· 6.1Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.
CVE-2026-45591High· 7.5ASP.NET Core Denial of Service Vulnerability
Uncontrolled resource consumption in ASP.NET Core allows an unauthorized attacker to deny service over a network.
CVE-2026-45491Medium· 6.2.NET Tampering Vulnerability
Improper link resolution before file access ('link following') in .NET allows an unauthorized attacker to perform tampering locally.
CVE-2026-26142Critical· 9.8Deserialization of untrusted data in Nuance PowerScribe allows an unauthorized attacker to execute code over a network.
Deserialization of untrusted data in Nuance PowerScribe allows an unauthorized attacker to execute code over a network.
CVE-2026-47644Medium· 6.5PoCCopilot Chat (Microsoft Edge) Information Disclosure Vulnerability
Improper neutralization of special elements in output used by a downstream component ('injection') in Copilot Chat (Microsoft Edge) allows an unauthorized attacker to disclose information over a network.
CVE-2026-47655Medium· 6.5Microsoft Graph Information Disclosure Vulnerability
Exposure of sensitive information to an unauthorized actor in Microsoft Graph allows an authorized attacker to disclose information over a network.
CVE-2026-42824Medium· 6.5M365 Copilot Information Disclosure Vulnerability
Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an unauthorized attacker to disclose information over a network.