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8.6
CVE-2026-120239: WAVLINK WN553X1-B allows remote command injection via WireGuard
CVE-2026-120239 · published 3 days ago
Summary
The WireGuard command-line tool on the WAVLINK WN553X1-B router can be tricked into running system commands when a specially crafted file identifier is sent. An attacker on the network could use this to execute arbitrary code on the device. Update the firmware to the latest version or apply the vendor's patch as soon as possible.
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 | V260403_2.0.0 |
Original advisory text
WAVLINK WN553X1-B WireGuard CLI ioos sub_419DA8 os command injection
A vulnerability was found in WAVLINK WN553X1-B V260403_2.0.0. This vulnerability affects the function sub_419DA8 of the file /bin/ioos of the component WireGuard CLI Handler. Performing a manipulation of the argument file_id results in os command injection. The attack is possible to be carried out remotely. The exploit has been made public and could 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
- Gives an attacker full control
Type
CWE-77Command Injection
CWE-78OS Command Injection
Timeline
Published1 Nov 2026
Updated3 Nov 2026
First seen1 Nov 2026
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