Vulnerabilidades de Microsoft

Use after free in Remote Desktop Gateway Service allows an unauthorized attacker to execute code over a network.

Improper privilege management in Windows Group Policy allows an authorized attacker to elevate privileges locally.

Stack-based buffer overflow in Windows Storage allows an authorized attacker to elevate privileges locally.

Heap-based buffer overflow in Microsoft Graphics Component allows an unauthorized attacker to execute code locally.

Deserialization of untrusted data in Dynamics Business Central allows an authorized attacker to execute code over a network.

Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.

Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.

Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.

Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.

Improper neutralization of special elements used in an os command ('os command injection') in Azure CycleCloud allows an authorized attacker to execute code locally.

Untrusted pointer dereference in SysInternals allows an authorized attacker to elevate privileges locally.

Heap-based buffer overflow in Windows Update Service allows an authorized attacker to elevate privileges locally.

Heap-based buffer overflow in Windows Client License Service allows an authorized attacker to elevate privileges locally.

Use after free in Windows Update Service allows an authorized attacker to elevate privileges locally.

Exposure of sensitive information to an unauthorized actor in Azure API Center allows an unauthorized attacker to disclose information over a network.

Missing authorization in Azure SRE Agent allows an authorized attacker to elevate privileges over a network.

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 group_workspaces.html later interpolates into inline Share event handlers. The escapeGroupHtml function leaves apostrophes unchanged, while escapeHtml produces an HTML entity that the browser decodes before JavaScript evaluation, so either path permits the filename to terminate the handler string. An authenticated group Owner, Admin, or DocumentManager can persist script that executes in the SimpleChat origin when another group member clicks Share, allowing access to victim-visible data and actions with the victim session. This issue is fixed in version 0.261.029.

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 authenticated low-privileged user to omit the top-level MCP type so that _reject_non_admin_mcp_stdio skips inspection before the type is restored from metadata. The stored personal action can then reach McpPluginFactory.create_connector, and MCPStdioPlugin.connect starts the attacker-selected operating-system process under the application service identity when the action tool is invoked. Exploitation requires personal plugins to be enabled and governance to permit MCP actions, and it can expose or modify secrets and data available to the service or disrupt the service. This issue is fixed in version 0.261.031.