CVE-2026-47643

Microsoft · Azure Stack Edge

Azure Stack Edge contains a path traversal vulnerability that allows unauthenticated remote attackers to execute arbitrary code over the network.

Executive summary

A critical vulnerability in Microsoft Azure Stack Edge allows unauthenticated attackers to execute arbitrary code through external file path control.

Vulnerability

The vulnerability stems from improper external control of file names or paths, which can be manipulated by an unauthenticated attacker to achieve remote code execution. This flaw bypasses standard security boundaries established for the device.

Business impact

The CVSS score of 9.8 reflects a critical severity level, indicating that the vulnerability is easily exploitable and carries a high impact on system integrity and availability. Compromise of an Azure Stack Edge device could provide an attacker with a foothold into the broader cloud-connected infrastructure, leading to unauthorized data access and potential service disruption.

Remediation

Immediate Action: Apply the latest security updates provided by Microsoft for Azure Stack Edge.

Proactive Monitoring: Audit device logs for suspicious file system access patterns or unexpected outbound network connections.

Compensating Controls: Ensure the device is isolated behind a strict firewall and that management interfaces are not exposed to the public internet.

Exploitation status

Public Exploit Available: Unknown

Analyst recommendation

Organizations utilizing Azure Stack Edge must monitor the official Microsoft security portal for patch release notifications. Given the critical nature of remote code execution flaws, updates should be applied to all affected instances immediately upon availability to mitigate the risk of unauthorized system access.