# CVE-2026-38064: Tenda 5G03 command injection in action_dial_call

Source: https://junglewise.ai/threats/cve-2026-38064-tenda-5g03-command-injection-in-action-dial-call  
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-2026-38064 · Severity: info · CVSS 8.8 · Published 2026-06-15

The Tenda 5G03 router, a device used for high-speed 5G wireless internet connectivity, contains a security flaw in its telephony management interface. An attacker with access to the device's management console can inject malicious commands through the phone dialing feature. If exploited, this allows the attacker to take full control of the router, potentially leading to intercepted internet traffic, service disruptions, or unauthorized access to the local network.

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

## Quick answers

**Is CVE-2026-38064 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-38064 being exploited in the wild.

**How severe is CVE-2026-38064?** 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-2026-38064?** 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-2026-38064 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-38064?** 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 within the 'action_dial_call' function in the '/usr/lib/lua/luci/controller/admin/telephony.lua' script. The 'dialNumber' parameter is processed without sufficient sanitization or validation before being passed to a system shell. An authenticated attacker can exploit this by sending a specially crafted POST request to the telephony trigger endpoint, allowing for arbitrary command execution with the privileges of the web service. A proof-of-concept exploit demonstrates that appending shell metacharacters to the dial number can trigger the execution of unauthorized system commands.

## Affected products

- Tenda 5G03 V05.03.02.04 (Version 1.0)

## Timeline

- 2026-03-16: other: Vulnerability submitted to vendor/research community
- 2026-06-15: disclosed: CVE published

## References

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

## Related threats

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