CVE-2026-120231
CriticalCVSS 9.9Summary
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.
Risk Assessment
A remote attacker could execute arbitrary commands on the device, potentially taking full control of the router and network. The public exploit increases the likelihood of rapid exploitation.
Recommendation
Update the device firmware to the vendor-patched version as soon as possible, or restrict access to the management interface and OpenVPN CLI. Until a fix is available, isolate the device on the network.
Other vulnerabilities in WAVLINK WN553X1-B
See all- 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.
- CVE-2026-120228Critical
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.
Original NVD description (English source)
A vulnerability was determined in WAVLINK WN553X1-B V260403_2.0.0. The affected element is the function sub_416568 of the file /bin/ioos of the component OpenVPN CLI Handler. This manipulation of the argument file_id causes os command injection. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS