microsoft has 2,953 CVEs on record between 2013 and 2026. Disclosure cadence is accelerating: 2137 in the last 90 days against 419 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 (639), Windows 10 Version 1607 (486), 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
- 2137 prev 419
Weakness classes
Products
- windows_10_1607 639
- Windows 10 Version 1607 486
- 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-2026-62697High· 7.8Use after free in Windows Push Notifications allows an authorized attacker to elevate privileges locally.
Use after free in Windows Push Notifications allows an authorized attacker to elevate privileges locally.
CVE-2026-56172High· 7.8Use after free in Windows VHD miniport driver allows an authorized attacker to elevate privileges locally.
Use after free in Windows VHD miniport driver allows an authorized attacker to elevate privileges locally.
CVE-2026-58599High· 7.8Heap-based buffer overflow in Microsoft Windows Codecs Library allows an unauthorized attacker to execute code locally.
Heap-based buffer overflow in Microsoft Windows Codecs Library allows an unauthorized attacker to execute code locally.
CVE-2026-47297High· 8.1Deserialization of untrusted data in SQL Server allows an unauthorized attacker to execute code over a network.
Deserialization of untrusted data in SQL Server allows an unauthorized attacker to execute code over a network.
CVE-2026-58649Medium· 6.5Origin validation error in .NET allows an unauthorized attacker to disclose information over a network.
Origin validation error in .NET allows an unauthorized attacker to disclose information over a network.
CVE-2026-57099High· 7.5Allocation of resources without limits or throttling in ASP.NET Core allows an unauthorized attacker to deny service over a network.
Allocation of resources without limits or throttling in ASP.NET Core allows an unauthorized attacker to deny service over a network.
CVE-2026-62804High· 7.8External control of file name or path in Microsoft Office Word allows an unauthorized attacker to execute code locally.
External control of file name or path in Microsoft Office Word allows an unauthorized attacker to execute code locally.
CVE-2026-69857High· 8.5Authorization bypass through user-controlled key in Azure Cosmos DB allows an authorized attacker to perform spoofing over a network.
Authorization bypass through user-controlled key in Azure Cosmos DB allows an authorized attacker to perform spoofing over a network.
CVE-2026-62906High· 7.4Improper neutralization of special elements in data query logic in Microsoft Discovery Studio allows an unauthorized attacker to disclose information over a network.
Improper neutralization of special elements in data query logic in Microsoft Discovery Studio allows an unauthorized attacker to disclose information over a network.
CVE-2026-83711Critical· 10.0Authorization bypass through user-controlled key in Microsoft Azure Active Directory B2C allows an unauthorized attacker to elevate privileges over a network.
Authorization bypass through user-controlled key in Microsoft Azure Active Directory B2C allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-80098Critical· 9.3Improper verification of cryptographic signature in Copilot Studio allows an unauthorized attacker to elevate privileges over a network.
Improper verification of cryptographic signature in Copilot Studio allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-70352Critical· 10.0Missing authentication for critical function in Azure AI Language allows an unauthorized attacker to elevate privileges over a network.
Missing authentication for critical function in Azure AI Language allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-70178High· 8.5Missing authorization in Microsoft Fabric allows an authorized attacker to elevate privileges over a network.
Missing authorization in Microsoft Fabric allows an authorized attacker to elevate privileges over a network.
CVE-2026-65818High· 8.5Server-side request forgery (ssrf) in Power Automate allows an authorized attacker to elevate privileges over a network.
Server-side request forgery (ssrf) in Power Automate allows an authorized attacker to elevate privileges over a network.
CVE-2026-62916Critical· 9.1Authentication bypass using an alternate path or channel in Microsoft Entra ID allows an unauthorized attacker to elevate privileges over a network.
Authentication bypass using an alternate path or channel in Microsoft Entra ID allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-66324Medium· 6.5External control of file name or path in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.
External control of file name or path in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.
CVE-2026-66798Medium· 4.3Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
CVE-2026-62904Medium· 5.4Incorrect authorization in Microsoft Edge (Chromium-based) allows an unauthorized attacker to disclose information over a network.
Incorrect authorization in Microsoft Edge (Chromium-based) allows an unauthorized attacker to disclose information over a network.
CVE-2026-58616Medium· 4.4Copilot Chat (Microsoft Edge) Information Disclosure Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Copilot Chat (Microsoft Edge) allows an authorized attacker to disclose information over a network.
CVE-2026-70331Medium· 5.4Microsoft Edge for iOS Spoofing Vulnerability
Improper neutralization of input used for llm prompting in Microsoft Edge for iOS allows an unauthorized attacker to perform spoofing over a network.
CVE-2026-70309Medium· 5.4Microsoft Edge (Chromium-based) Security Feature Bypass Vulnerability
Origin validation error in Microsoft Edge (Chromium-based) allows an unauthorized attacker to bypass a security feature over a network.
CVE-2026-72984High· 8.8Access of resource using incompatible type ('type confusion') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
Access of resource using incompatible type ('type confusion') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
CVE-2026-66323Medium· 5.4Improper neutralization of parameter/argument delimiters in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
Improper neutralization of parameter/argument delimiters in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
CVE-2026-62316High· 8.8PoCMicrosoft UFO open-source framework for intelligent automation across devices and platforms
Microsoft UFO open-source framework for intelligent automation across devices and platforms. Prior to 3.0.8, ufo/client/mcp/http_servers/linux_mcp_server.py binds a FastMCP streamable HTTP server to localhost:8010 but does not validate t…
CVE-2026-69502Critical· 10.0Server-side request forgery (ssrf) in Azure SQL Database allows an unauthorized attacker to elevate privileges over a network.
Server-side request forgery (ssrf) in Azure SQL Database allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-69851Critical· 9.9Microsoft Entra ID Elevation of Privilege Vulnerability
Server-side request forgery (ssrf) in Azure Active Directory allows an authorized attacker to elevate privileges over a network.
CVE-2026-69836Critical· 10.0PoCMicrosoft Entra ID Remote Code Execution Vulnerability
Deserialization of untrusted data in Microsoft Entra ID allows an unauthorized attacker to execute code over a network.
CVE-2026-69519High· 8.6Azure Stack HCI Information Disclosure Vulnerability
Observable response discrepancy in Azure Stack HCI allows an unauthorized attacker to disclose information over a network.
CVE-2026-70105Medium· 6.5Microsoft Word Information Disclosure Vulnerability
Improper input validation in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.
CVE-2026-69555Critical· 10.0Azure Arc Elevation of Privilege Vulnerability
Incorrect authorization in Azure Arc allows an unauthorized attacker to elevate privileges over a network.