Is CVE-2026-120229 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-120229 being exploited in the wild.

How severe is CVE-2026-120229?

Critical severity, with a CVSS score of 9.1, published 1 November 2026.

Which products and versions are affected?

Wavlink WN553X1-B V260403_2.0.0.

Is there a fix for CVE-2026-120229?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-120229 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-120229?

Check whether you run Wavlink WN553X1-B at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-120229: WAVLINK WN553X1-B os command injection in ioos

CVE-2026-120229 · Severity: critical · CVSS 9.1 · Published 2026-11-01

A WiFi router management service in the WAVLINK WN553X1-B contains an authenticated command injection vulnerability that allows an attacker with valid credentials to execute arbitrary commands as root. Since the factory default password is hardcoded as "admin," routers that have not changed the default password are vulnerable to complete device compromise without authentication. An attacker can gain full control of the network infrastructure device to intercept traffic, launch further attacks, or disable connectivity.

Technologies: Wavlink WN553X1-B. Vendors: Wavlink.

Quick answers

Is CVE-2026-120229 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-120229 being exploited in the wild.
How severe is CVE-2026-120229?: Critical severity, with a CVSS score of 9.1, published 1 November 2026.
Which products and versions are affected?: Wavlink WN553X1-B V260403_2.0.0.
Is there a fix for CVE-2026-120229?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-120229 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-120229?: Check whether you run Wavlink WN553X1-B at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability is an OS command injection (CWE-78) in the sub_416B50 function of /bin/ioos, where the user-supplied file_id parameter is passed unsanitized to snprintf and then popen. The attacker must be authenticated (requiring the device password, default "admin"), but the injected command executes with root privileges. Multiple similar vulnerable functions exist in the same binary (ovpn_file, openvpn_cli, wg_file, wireguard_cli, wireguard_manual_cli).

Affected products

WAVLINK WN553X1-B V260403_2.0.0

Timeline

2026-11-01: disclosed: Vulnerability disclosed publicly

References

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