CVE-2026-120228
CriticalCVSS 9.9Summary
A flaw was found in WAVLINK WN553X1-B version V260403_2.0.0 affecting the sub_416D88 function in /bin/ioos (ioos Service component). Manipulation of the group_id/group_name arguments can lead to OS command injection. The attack can be executed remotely and the exploit has been published.
Risk Assessment
A remote attacker could exploit this to execute arbitrary commands on the device, risking compromise of the network device. The published exploit increases the risk of active exploitation.
Recommendation
Update the device firmware to the vendor-patched version; until then, restrict remote access to the ioos service and segment the network.
Other vulnerabilities in WAVLINK WN553X1-B
See all- CVE-2026-120231Critical
A vulnerability was found in WAVLINK WN553X1-B V260403_2.0.0 in the function sub_416568 of /bin/ioos, part of the OpenVPN CLI Handler. Manipulating the file_id argument leads to OS command injection. The attack can be performed remotely and the exploit has been publicly disclosed.
- CVE-2026-120229Critical
A vulnerability was found in WAVLINK WN553X1-B version 260403_2.0.0 affecting the sub_416B50 function in /bin/ioos. Manipulation of the file_id argument leads to OS command injection. The attack can be carried out remotely and the exploit has been publicly disclosed.
Original NVD description (English source)
A flaw has been found in WAVLINK WN553X1-B V260403_2.0.0. This vulnerability affects the function sub_416D88 of the file /bin/ioos of the component ioos Service. Executing a manipulation of the argument group_id/group_name can lead to os command injection. The attack can be executed remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS