# CVE-2026-38063: Tenda 5G03 command injection in action_radio_on_with_ia_apn

Source: https://junglewise.ai/threats/cve-2026-38063-tenda-5g03-command-injection-in-action-radio-on-with-ia-apn  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-15. Updated: 2026-06-15  
License: CC BY 4.0 with a link back

CVE-2026-38063 · Severity: info · CVSS 8.8 · Published 2026-06-15

The Tenda 5G03 router is vulnerable to a security flaw that allows an attacker to take control of the device. By sending a specially crafted request to the router's management interface, an attacker can execute unauthorized commands. This could lead to a complete compromise of the network traffic passing through the router or a total service outage.

Technologies: [Tenda 5G03](https://junglewise.ai/threats/technologies/5g03). Vendors: [Tenda](https://junglewise.ai/threats/vendors/tenda).

## Quick answers

**Is CVE-2026-38063 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-38063 being exploited in the wild.

**How severe is CVE-2026-38063?** Informational severity, with a CVSS score of 8.8, published 15 June 2026.

**Which products and versions are affected?** Tenda 5G03 V05.03.02.04 (Version 1.0).

**Is there a fix for CVE-2026-38063?** 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-2026-38063 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-38063?** Check whether you run Tenda 5G03 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

A command injection vulnerability exists in the Tenda 5G03 router firmware version V05.03.02.04. The flaw is located in the 'action_radio_on_with_ia_apn' function within the '/usr/lib/lua/luci/controller/admin/telephony.lua' script. The 'ia' parameter is processed without sufficient sanitization before being passed to a system shell, allowing an authenticated attacker to inject arbitrary shell commands. Exploitation requires a valid session ID (sysauth cookie) and involves sending a POST request to the '/cgi-bin/luci/admin/telephony/trigger_set_radio_on_with_ia' endpoint. Successful exploitation grants the attacker root-level command execution on the underlying Linux operating system.

## Affected products

- Tenda 5G03 V05.03.02.04 (Version 1.0)

## Timeline

- 2026-03-16: disclosed: Vulnerability submitted to vendor/research community
- 2026-06-15: advisory: CVE published by NVD/MITRE

## References

- [https://github.com/sezangel/IOT-vul/tree/main/Tenda/5G03/action_radio_on_with_ia_apn](https://github.com/sezangel/IOT-vul/tree/main/Tenda/5G03/action_radio_on_with_ia_apn)

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