# CVE-2026-38061: Tenda 5G03 command injection in action_set_volume

Source: https://junglewise.ai/threats/cve-2026-38061-tenda-5g03-command-injection-in-action-set-volume  
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-2026-38061 · Severity: info · CVSS 8.8 · Published 2026-06-15

The Tenda 5G03 router, a device used to provide 5G wireless internet connectivity, contains a security flaw in its volume control settings. An attacker with access to the router's management interface can send a specially crafted command that allows them to take full control of the device. This could lead to the interception of internet traffic, unauthorized access to the local network, or a complete shutdown of the router's services.

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

## Quick answers

**Is CVE-2026-38061 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-38061 being exploited in the wild.

**How severe is CVE-2026-38061?** 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-2026-38061?** 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-2026-38061 attacked?** It is attacked over the network, in device firmware.

**Am I affected by CVE-2026-38061?** 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 (Version 1.0). The flaw is located within the 'action_set_volume' function in the '/usr/lib/lua/luci/controller/admin/telephony.lua' script. The 'volume' parameter is processed without sufficient sanitization or validation before being passed to a system shell. An authenticated attacker can exploit this by sending a POST request to the '/cgi-bin/luci/admin/telephony/trigger_call_set_volume' endpoint with a malicious payload in the 'volume' field. Successful exploitation results in arbitrary command execution with the privileges of the web server (typically root on such devices).

## Affected products

- Tenda 5G03 V05.03.02.04 (Version 1.0)

## Timeline

- 2026-03-16: disclosed: Initial discovery and submission by researcher.
- 2026-06-15: advisory: CVE published by MITRE/NVD.

## References

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

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