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-2026-49159Medium· 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-2026-35425High· 8.0Azure API Management (APIM) Remote Code Execution Vulnerability
Improper access control in Azure API Management (APIM) allows an authorized attacker to execute code over a network.
CVE-2026-62835Critical· 9.3Azure Portal Information Disclosure Vulnerability
Improper authorization in Azure Portal allows an unauthorized attacker to disclose information over a network.
CVE-2026-57106Critical· 10.0Data Quality Elevation of Privilege Vulnerability
Server-side request forgery (ssrf) in Data Quality allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-56191Critical· 10.0Microsoft Exchange Online Tampering Vulnerability
Improper authentication in Microsoft Exchange Online allows an unauthorized attacker to perform tampering over a network.
CVE-2026-58630Critical· 10.0Azure App Service on Azure Stack Hub Elevation of Privilege Vulnerability
Improper access control in Azure App Service allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-62825Critical· 10.0Improper authentication in Azure Key Vault allows an unauthorized attacker to elevate privileges over a network.
Improper authentication in Azure Key Vault allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-58275Critical· 10.0Missing authorization in Azure DNS allows an unauthorized attacker to elevate privileges over a network.
Missing authorization in Azure DNS allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-56160Critical· 9.1Improper authorization in Azure Red Hat OpenShift (ARO) allows an authorized attacker to elevate privileges over a network.
Improper authorization in Azure Red Hat OpenShift (ARO) allows an authorized attacker to elevate privileges over a network.
CVE-2026-59860HighMicrosoft Kiota: XML Doc-Comment Newline Breakout Code Injection
Microsoft Kiota: XML Doc-Comment Newline Breakout Code Injection
CVE-2026-59861High· 7.5Microsoft Kiota: Code Generation Literal Injection in Kiota Ruby Generator
Microsoft Kiota: Code Generation Literal Injection in Kiota Ruby Generator
CVE-2026-59862High· 7.5Microsoft Kiota: Code Generation Literal Injection in Kiota Python Generator
Microsoft Kiota: Code Generation Literal Injection in Kiota Python Generator
CVE-2026-59859HighMicrosoft Kiota: Code Generation Literal Injection in Kiota PHP Generator
Microsoft Kiota: Code Generation Literal Injection in Kiota PHP Generator
CVE-2026-59864CriticalMicrosoft Kiota: Path/URL injection into generated Copilot plugin manifest via x-ai-* extensions
Microsoft Kiota: Path/URL injection into generated Copilot plugin manifest via x-ai-* extensions
CVE-2026-59867High· 7.1Microsoft Kiota: Generation-time SSRF + remote/local file inclusion via unrestricted $ref
Microsoft Kiota: Generation-time SSRF + remote/local file inclusion via unrestricted $ref
CVE-2026-59863HighMicrosoft Kiota Workspace-config poisoning: out-of-repo file write + generation-time SSRF
Microsoft Kiota Workspace-config poisoning: out-of-repo file write + generation-time SSRF
CVE-2026-59865CriticalMicrosoft Kiota: Command injection via x-ms-kiota-info dependencyInstallCommand surfaced by `kiota info`
Microsoft Kiota: Command injection via x-ms-kiota-info dependencyInstallCommand surfaced by `kiota info`
CVE-2026-59866HighMicrosoft Kiota: Arbitrary file write + code-injection via x-ms-kiota-info clientClassName and clientNamespaceName
Microsoft Kiota: Arbitrary file write + code-injection via x-ms-kiota-info clientClassName and clientNamespaceName
GHSA-p5rm-jg5c-8c77MediumMicrosoft Kiota: Path traversal in generated plugin manifest static_template.file reference (percent-encoding bypass)
Microsoft Kiota: Path traversal in generated plugin manifest static_template.file reference (percent-encoding bypass)
CVE-2026-56167High· 8.5Azure AI Search Elevation of Privilege Vulnerability
Server-side request forgery (ssrf) in Azure AI Search allows an authorized attacker to elevate privileges over a network.
CVE-2026-56165Critical· 9.8Microsoft Account Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Account allows an unauthorized attacker to execute code over a network.
CVE-2026-54120Critical· 9.9Microsoft Surface Remote Code Execution Vulnerability
Improper input validation in Microsoft Surface allows an authorized attacker to execute code over a network.
CVE-2026-50650High· 7.8Microsoft Security Advisory CVE-2026-50650 – .NET Elevation of Privilege Vulnerability
Microsoft Security Advisory CVE-2026-50650 – .NET Elevation of Privilege Vulnerability
CVE-2026-50524High· 7.5Microsoft Security Advisory CVE-2026-50524 – .NET Denial of Service Vulnerability
Microsoft Security Advisory CVE-2026-50524 – .NET Denial of Service Vulnerability
CVE-2026-50651High· 7.5Microsoft Security Advisory CVE-2026-50651 – .NET Denial of Service Vulnerability
Microsoft Security Advisory CVE-2026-50651 – .NET Denial of Service Vulnerability
CVE-2026-57108High· 7.5Microsoft Security Advisory CVE-2026-57108 – .NET Denial of Service Vulnerability
Microsoft Security Advisory CVE-2026-57108 – .NET Denial of Service Vulnerability
CVE-2026-57980Medium· 5.4Microsoft Edge (Chromium-based) Tampering Vulnerability
Authentication bypass using an alternate path or channel in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform tampering over a network.
CVE-2026-56171High· 7.1Windows Remote Desktop Protocol (RDP) Information Disclosure Vulnerability
Exposure of private personal information to an unauthorized actor in Windows RDP allows an unauthorized attacker to disclose information over a network.
CVE-2026-59117High· 7.5Windows Terminal Remote Code Execution Vulnerability
Integer overflow or wraparound in Windows Terminal allows an unauthorized attacker to execute code over a network.
CVE-2026-62826Medium· 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.