WAVLINK WN553X1-B WireGuard CLI Group ioos sub_41A748 os command injection

Summary

A vulnerability was determined in WAVLINK WN553X1-B V260403_2.0.0. This issue affects the function sub_41A748 of the file /bin/ioos of the component WireGuard CLI Group Handler. Executing a manipulation of the argument group_id/group_name can lead to os command injection. The attack may be performed from remote. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure.

Remediation

1. Inventory every WAVLINK WN553X1-B deployment, including staging.
2. No fixed version appears in the public sources yet. Check the references below and the vendor directly.

References

• Advisoryhttps://vuldb.com/cve/CVE-2026-120240
• Advisoryhttps://vuldb.com/submit/919251
• Referencehttps://github.com/senxitoyshuyi-ui/HACKALL/blob/main/WAVLINK%20WN553X1-B%20Router/WAVLINK_WN553X1-B_wireguard_cli_group_command_injection.md
• Referencehttps://vuldb.com/vuln/429599
• Referencehttps://vuldb.com/vuln/429599/cti