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8.5
CVE-2026-120229: WAVLINK WN553X1-B allows remote command execution
CVE-2026-120229 · published 3 days ago
Summary
The WN553X1-B router’s internal program can be tricked into running arbitrary system commands when a specially crafted value is sent to it. This can be done over the network, letting an attacker take control of the device. Apply the vendor’s update or patch the firmware as soon as possible to block the risk.
What to do
The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.
Affected software
| Vendor | Product | Affected versions |
|---|---|---|
| wavlink | wn553x1-b | 260403_2.0.0 |
Original advisory text
WAVLINK WN553X1-B ioos sub_416B50 os command injection
A vulnerability has been found in WAVLINK WN553X1-B 260403_2.0.0. This issue affects the function sub_416B50 of the file /bin/ioos. The manipulation of the argument file_id leads to os command injection. The attack is possible to be carried out remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure.
Internet-facing
14 days
Internal
At next upgrade
- Not known to be exploited
- Needs hands-on effort to exploit (estimated)
- Gives an attacker full control (estimated)
Type
CWE-77Command Injection
CWE-78OS Command Injection
Timeline
Published1 Nov 2026
Updated2 Nov 2026
First seen1 Nov 2026
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