# CVE-2026-120198: WAVLINK WL-WN530BE1-A command injection in protocol.csp

Source: https://junglewise.ai/threats/cve-2026-120198-a-vulnerability-has-been-found-in-wavlink-wl-wn530be1-a-v251117  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-01. Updated: 2026-11-02  
License: CC BY 4.0 with a link back

CVE-2026-120198 · Severity: critical · CVSS 10 · Published 2026-11-01

WAVLINK's WL-WN530BE1-A is a Wi-Fi router that manages network traffic and security. This vulnerability allows an attacker to execute arbitrary commands with root privileges on the device by sending a specially crafted request, bypassing all authentication protections. An attacker can read sensitive files like Wi-Fi credentials and VPN certificates, or fully compromise the device to intercept network traffic.

Technologies: [Wavlink WL-WN530BE1-A](https://junglewise.ai/threats/technologies/wl-wn530be1-a). Vendors: [Wavlink](https://junglewise.ai/threats/vendors/wavlink).

## Quick answers

**Is CVE-2026-120198 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-120198 being exploited in the wild.

**How severe is CVE-2026-120198?** Critical severity, with a CVSS score of 10, published 1 November 2026.

**Which products and versions are affected?** Wavlink WL-WN530BE1-A M30BE1_V251117.

**Is there a fix for CVE-2026-120198?** 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-2026-120198 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-120198?** Check whether you run Wavlink WL-WN530BE1-A 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

Unauthenticated command injection via the group_name parameter in /protocol.csp?opt=wireguard_cli_group, combined with IP-FROM HTTP header spoofing to bypass authentication (con_check_read_finish checks if IP-FROM equals 127.0.0.1 rather than the actual TCP peer address). The ioos binary concatenates unsanitized user input into a system() call without validation. An attacker on the network can forge the IP-FROM header and inject shell metacharacters in group_name to execute arbitrary commands as root.

## Affected products

- WAVLINK WL-WN530BE1-A M30BE1_V251117

## Timeline

- 2026-11-01: disclosed: Exploit disclosed publicly on GitHub
- 2026-11-01: advisory

## References

- [https://github.com/pipiyyb/cve/blob/main/WN530BE1.md](https://github.com/pipiyyb/cve/blob/main/WN530BE1.md)
- [https://vuldb.com/cve/CVE-2026-120198](https://vuldb.com/cve/CVE-2026-120198)

## Related threats

- [Wavlink WL-WN530BE1-A OS command injection in protocol.csp](https://junglewise.ai/threats/cve-2026-113802-wavlink-wl-wn530be1-a-firmware-through-m30be1-v251117-contains)
- [Wavlink WL-WN530BE1-A stack-based buffer overflow in settings export](https://junglewise.ai/threats/cve-2026-109109-a-vulnerability-was-detected-in-wavlink-wl-wn530be1-a-251117)
- [Wavlink WL-WN530BE1-A OS command injection in uploadVpn](https://junglewise.ai/threats/cve-2026-109108-a-security-vulnerability-has-been-detected-in-wavlink-wl)