CVE-2026-55134 Microsoft Word Remote Code Execution Vulnerability
Updated an acknowledgement. This is an informational change only.
Continuous enterprise threat intelligence tracking active in-the-wild zero-days (CISA KEV), Microsoft Windows KB cumulative updates, MSRC security advisories, and CVE remediation.
Updated an acknowledgement. This is an informational change only.
Updated an acknowledgement. This is an informational change only.
Updated an acknowledgement. This is an informational change only.
Updated an acknowledgement. This is an informational change only.
Updated an acknowledgement. This is an informational change only.
Updated an acknowledgement. This is an informational change only.
Updated an acknowledgement. This is an informational change only.
Updated an acknowledgement. This is an informational change only.
Updated an acknowledgement. This is an informational change only.
Updated an acknowledgement. This is an informational change only.
Updated an acknowledgement. This is an informational change only.
Updated an acknowledgement. This is an informational change only.
Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to elevate privileges locally.
Information published.
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.
Server-side request forgery (ssrf) 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.
Incorrect permission assignment for critical resource in M365 Copilot allows an authorized attacker to disclose information 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.
Improper authorization in Azure Database for PostgreSQL allows an authorized attacker to elevate privileges over a network.
Microsoft is announcing the availability of the security updates for Microsoft Office for Mac. Customers running affected Mac software should install the update for their product to be protected from this vulnerability. Customers running other Microsoft Office software do not need to take any action. See the [Release Notes](https://go.microsoft.com/fwlink/p/?linkid=831049) for more information and download links.
Improper neutralization of input during web page generation ('cross-site scripting') in Azure Portal allows an unauthorized attacker to perform spoofing over a network.
Improper access control in Azure Logic Apps allows an unauthorized attacker to elevate privileges over a network.
Microsoft is announcing the availability of the security updates for Microsoft Office for Mac. Customers running affected Mac software should install the update for their product to be protected from this vulnerability. Customers running other Microsoft Office software do not need to take any action. See the [Release Notes](https://go.microsoft.com/fwlink/p/?linkid=831049) for more information and download links.