# CVE-2024-51313: Tenda TX9 Pro stack overflow in SetNetControlList

Source: https://junglewise.ai/threats/cve-2024-51313-tenda-tx9-pro-stack-overflow-in-setnetcontrollist  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-20. Updated: 2026-07-20  
License: CC BY 4.0 with a link back

CVE-2024-51313 · Severity: info · Published 2026-07-20

A security vulnerability exists in the Tenda TX9 Pro router, a device used to provide wireless internet connectivity. An attacker can send a specially crafted web request to the router's management interface to cause a system crash or potentially take control of the device. This could lead to a complete loss of internet access for connected users or allow an attacker to intercept network traffic.

Technologies: [Tenda TX9 Pro](https://junglewise.ai/threats/technologies/tx9-pro). Vendors: [Tenda](https://junglewise.ai/threats/vendors/tenda).

## Quick answers

**Is CVE-2024-51313 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2024-51313 being exploited in the wild.

**How severe is CVE-2024-51313?** Informational severity, published 20 July 2026.

**Which products and versions are affected?** Tenda TX9 Pro V22.03.02.20.

**Is there a fix for CVE-2024-51313?** 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-2024-51313 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2024-51313?** Check whether you run Tenda TX9 Pro 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 stack-based buffer overflow vulnerability exists in the Tenda TX9 Pro firmware version V22.03.02.20. The issue is located within the 'httpd' binary, specifically in the 'sub_4335DC' function (called by 'sub_4337EC' or 'sub_42EA38' depending on the specific firmware build) when processing the 'list' parameter via a POST request to '/goform/SetNetControlList' or '/goform/SetVirtualServerCfg'. The vulnerability is caused by an unsafe 'strcpy' operation that copies user-controlled input into a fixed-size stack buffer without length validation. A remote attacker can exploit this by sending a large payload in the 'list' parameter to overwrite the stack, potentially leading to arbitrary code execution or a Denial of Service (DoS).

## Affected products

- Tenda TX9 Pro V22.03.02.20

## Timeline

- 2024-10-21: disclosed: Initial researcher disclosure on Gitee
- 2026-07-20: advisory: CVE published to NVD dataset

## References

- [https://gitee.com/GXB0_0/iot-vul/blob/master/Tenda/TX9/20/SetNetControlList.md](https://gitee.com/GXB0_0/iot-vul/blob/master/Tenda/TX9/20/SetNetControlList.md)
- [https://www.tendacn.com/download/detail-4515.html](https://www.tendacn.com/download/detail-4515.html)

## Related threats

- [Tenda TX9 Pro buffer overflow in SetOnlineDevName](https://junglewise.ai/threats/cve-2024-51316-tenda-tx9-pro-buffer-overflow-in-setonlinedevname)
- [Tenda TX9 Pro stack overflow in SetOnlineDevName](https://junglewise.ai/threats/cve-2024-51315-tenda-tx9-pro-stack-overflow-in-setonlinedevname)
- [Tenda TX9 Pro stack overflow in SetStaticRouteCfg](https://junglewise.ai/threats/cve-2024-51312-tenda-tx9-pro-stack-overflow-in-setstaticroutecfg)
- [Tenda TX9 stack overflow in SetNetControlList](https://junglewise.ai/threats/cve-2024-51311-tenda-tx9-stack-overflow-in-setnetcontrollist)