CVE-2026-6560 describes a remote buffer overflow vulnerability in H3C Magic B0 devices up to version 100R002. The flaw exists in the Edit_BasicSSID function within the /goform/aspForm file, where improper handling of an argument parameter allows an attacker to cause a buffer overflow. This vulnerability can be triggered remotely without user interaction and requires low attack complexity and privileges. The CVSS 4.0 vector indicates high impact on confidentiality, integrity, and availability. Despite public disclosure of the exploit, the vendor has not provided a patch or official remediation, and no exploits are currently known to be active in the wild.

Successful exploitation of this vulnerability could allow a remote attacker to cause a buffer overflow, potentially leading to arbitrary code execution or denial of service on the affected device. The high CVSS score reflects the significant risk to confidentiality, integrity, and availability. However, there are no confirmed reports of exploitation in the wild at this time.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since the vendor has not responded and no official patch is available, users should monitor for updates from H3C. Until a fix is released, consider limiting remote access to the affected device and applying network-level protections to reduce exposure to potential attacks targeting this vulnerability.