CVE-2026-6563

H3C · Magic B1

A security vulnerability exists in H3C Magic B1 routers up to version 100R004.

Executive summary

A high-severity security vulnerability in H3C Magic B1 routers requires immediate attention to prevent potential unauthorized access and compromise.

Vulnerability

This vulnerability affects the H3C Magic B1 series. The flaw allows for potential security compromise, necessitating a review of the vendor’s security advisory for specific attack vectors and remediation steps.

Business impact

Exploitation of this vulnerability could lead to unauthorized administrative control of network hardware, potentially resulting in data interception or network disruption. With a CVSS score of 8.8, this is a significant risk that could impact the security posture of the entire network.

Remediation

Immediate Action: Update H3C Magic B1 firmware to the latest recommended version provided by the manufacturer.

Proactive Monitoring: Monitor router logs for unauthorized configuration changes or anomalous traffic patterns originating from the device.

Compensating Controls: Restrict administrative access to the router to trusted internal management subnets only.

Exploitation status

Public Exploit Available: False

Analyst recommendation

Users of H3C Magic B1 routers should verify their firmware version and apply the latest security updates immediately. Given the high CVSS score, organizations should treat this as a priority update to prevent potential network exploitation.