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-2026-77900Critical· 9.8Missing authentication for critical function in Azure App Service allows an unauthorized attacker to execute code over a network.
Missing authentication for critical function in Azure App Service allows an unauthorized attacker to execute code over a network.
CVE-2026-69435Critical· 9.6Missing authorization in Azure SRE Agent allows an authorized attacker to elevate privileges over a network.
Missing authorization in Azure SRE Agent allows an authorized attacker to elevate privileges over a network.
CVE-2026-105793Critical· 9.1PoCMicrosoft UFO is an open-source framework for intelligent automation across devices and platforms
Microsoft UFO is an open-source framework for intelligent automation across devices and platforms. Prior to 3.0.9, the press_key tool in ufo/client/mcp/http_servers/mobile_mcp_server.py accepts a free-form key_code parameter and passes i…
CVE-2026-105791High· 7.5PoCMicrosoft UFO is an open-source framework for intelligent automation across devices and platforms
Microsoft UFO is an open-source framework for intelligent automation across devices and platforms. Prior to 3.0.9, the run_shell tool in the CommandLineExecutor component of ufo/client/mcp/local_servers/cli_mcp_server.py validates only t…
CVE-2026-105794Critical· 9.1MsQuic is a cross-platform C implementation of the IETF QUIC protocol exposed to C, C++, C#, and Rust
MsQuic is a cross-platform C implementation of the IETF QUIC protocol exposed to C, C++, C#, and Rust. Prior to 2.4.20, 2.5.11, and 2.6.1, MsQuic clients using the OpenSSL or QuicTLS TLS backend do not properly verify that a server certi…
CVE-2026-105792Medium· 6.5PoCMicrosoft UFO is an open-source framework for intelligent automation across devices and platforms
Microsoft UFO is an open-source framework for intelligent automation across devices and platforms. Prior to 3.0.9, the /api/task_result/{task_name} endpoint calls SessionManager.get_result_by_task() in ufo/server/services/session_manager…
CVE-2026-105797High· 8.8PoCSimpleChat is a secure AI conversation application with personal and group workspaces for document-grounded interactions
SimpleChat is a secure AI conversation application with personal and group workspaces for document-grounded interactions. In versions 0.261.003 and 0.261.027, an authorization ordering flaw in POST /api/user/plugins allows an authenticat…
CVE-2026-105796High· 8.8Kiota is an OpenAPI based HTTP Client code generator
Kiota is an OpenAPI based HTTP Client code generator. From 0.5.0 until 1.35.0, Kiota's Java and PHP documentation-comment sanitizers delete block-comment terminators rather than neutralizing them, allowing overlapping characters to refor…
CVE-2026-105795Low· 3.1Kiota is an OpenAPI based HTTP Client code generator
Kiota is an OpenAPI based HTTP Client code generator. From 1.25.1 until 1.35.0, Kiota copies x-ai-capabilities.response_semantics.oauth_card_path from an attacker-controlled or compromised OpenAPI description into a generated API plugin …
CVE-2026-105798High· 8.7PoCSimpleChat is a secure AI conversation application with personal and group workspaces for document-grounded interactions
SimpleChat is a secure AI conversation application with personal and group workspaces for document-grounded interactions. Prior to 0.261.029, POST /api/group_documents/upload stores an attacker-controlled group document filename that gro…
CVE-2026-105790Medium· 6.4PoCMicrosoft UFO is an open-source framework for intelligent automation across devices and platforms
Microsoft UFO is an open-source framework for intelligent automation across devices and platforms. Prior to 3.0.9, authenticated device registration through /api/devices can supply a permitted attacker-controlled WebSocket endpoint while…
CVE-2026-105789Medium· 5.4Microsoft UFO is an open-source framework for intelligent automation across devices and platforms
Microsoft UFO is an open-source framework for intelligent automation across devices and platforms. Prior to 3.0.9, the execute_command tool in ufo/client/mcp/http_servers/linux_mcp_server.py treats sort and uniq as read-only commands whi…
CVE-2026-105788High· 8.8PoCMicrosoft UFO is an open-source framework for intelligent automation across devices and platforms
Microsoft UFO is an open-source framework for intelligent automation across devices and platforms. Prior to 3.0.10, the type_text and launch_app tools in ufo/client/mcp/http_servers/mobile_mcp_server.py pass the authenticated caller-cont…
CVE-2026-96940High· 8.8PoCWeak authentication in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.
Weak authentication in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.
CVE-2026-100208High· 7.5Integer overflow or wraparound in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.
Integer overflow or wraparound in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.
CVE-2026-70125High· 8.8Microsoft Office Outlook Remote Code Execution Vulnerability
Microsoft Office Outlook Remote Code Execution Vulnerability
CVE-2026-88097High· 8.1Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to elevate privileges locally.
Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to elevate privileges locally.
CVE-2026-62874Critical· 10.0Insufficient verification of data authenticity in Azure Billing allows an unauthorized attacker to elevate privileges over a network.
Insufficient verification of data authenticity in Azure Billing allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-85878Critical· 9.9Improper authorization in Azure Database for PostgreSQL allows an authorized attacker to elevate privileges over a network.
Improper authorization in Azure Database for PostgreSQL allows an authorized attacker to elevate privileges over a network.
CVE-2026-83946High· 8.2Improper neutralization of input during web page generation ('cross-site scripting') in Azure Portal allows an unauthorized attacker to perform spoofing over a network.
Improper neutralization of input during web page generation ('cross-site scripting') in Azure Portal allows an unauthorized attacker to perform spoofing over a network.
CVE-2026-69843Critical· 10.0Authentication bypass by spoofing in Microsoft Fabric allows an unauthorized attacker to elevate privileges over a network.
Authentication bypass by spoofing in Microsoft Fabric allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-85887High· 7.7Incorrect permission assignment for critical resource in M365 Copilot allows an authorized attacker to disclose information over a network.
Incorrect permission assignment for critical resource in M365 Copilot allows an authorized attacker to disclose information over a network.
CVE-2026-87701Critical· 9.6Improper neutralization of special elements in output used by a downstream component ('injection') in Azure Cosmos DB allows an authorized attacker to elevate privileges over a network.
Improper neutralization of special elements in output used by a downstream component ('injection') in Azure Cosmos DB allows an authorized attacker to elevate privileges over a network.
CVE-2026-85917High· 7.5Server-side request forgery (ssrf) in Azure AI Foundry allows an unauthorized attacker to elevate privileges over a network.
Server-side request forgery (ssrf) in Azure AI Foundry allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-85889Critical· 10.0Missing authentication for critical function in Azure AI Foundry allows an unauthorized attacker to elevate privileges over a network.
Missing authentication for critical function in Azure AI Foundry allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-85885Critical· 9.9Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an authorized attacker to elevate privileges over a network.
Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an authorized attacker to elevate privileges over a network.
CVE-2026-83944Critical· 10.0Improper access control in Azure Logic Apps allows an unauthorized attacker to elevate privileges over a network.
Improper access control in Azure Logic Apps allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-78501High· 8.6Improper neutralization of special elements used in a command ('command injection') in Microsoft 365 Copilot's Business Chat allows an unauthorized attacker to disclose information over a network.
Improper neutralization of special elements used in a command ('command injection') in Microsoft 365 Copilot's Business Chat allows an unauthorized attacker to disclose information over a network.
CVE-2026-77903Critical· 9.0Authentication bypass by spoofing in Microsoft Dataverse allows an unauthorized attacker to elevate privileges over a network.
Authentication bypass by spoofing in Microsoft Dataverse allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-70200Critical· 10.0Improper limitation of a pathname to a restricted directory ('path traversal') in Azure Logic Apps allows an unauthorized attacker to elevate privileges over a network.
Improper limitation of a pathname to a restricted directory ('path traversal') in Azure Logic Apps allows an unauthorized attacker to elevate privileges over a network.