# CVE-2026-38709: Cudy Routers command injection in net.set_wan interface

Source: https://junglewise.ai/threats/cve-2026-38709-cudy-routers-command-injection-in-net-set-wan-interface  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-30. Updated: 2026-07-30  
License: CC BY 4.0 with a link back

CVE-2026-38709 · Severity: info · CVSS 9.8 · Published 2026-07-30

Multiple Cudy router models contain a security flaw in their network configuration interface. This vulnerability allows an attacker to take complete control of the router by executing unauthorized commands with the highest level of system privileges (root). A successful exploit could lead to the interception of internet traffic, unauthorized access to the local network, or a complete shutdown of the device.

Technologies: [Cudy TR1200](https://junglewise.ai/threats/technologies/tr1200), [Cudy TR3000](https://junglewise.ai/threats/technologies/tr3000), [Cudy WR1200](https://junglewise.ai/threats/technologies/wr1200), [Cudy WR1300](https://junglewise.ai/threats/technologies/wr1300), [Cudy WR1500](https://junglewise.ai/threats/technologies/wr1500), [Cudy WR300](https://junglewise.ai/threats/technologies/wr300), [Cudy WR3000](https://junglewise.ai/threats/technologies/wr3000), [Cudy WR3600](https://junglewise.ai/threats/technologies/wr3600), [Cudy WR6500](https://junglewise.ai/threats/technologies/wr6500). Vendors: [Cudy](https://junglewise.ai/threats/vendors/cudy).

## Quick answers

**Is CVE-2026-38709 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-38709 being exploited in the wild.

**How severe is CVE-2026-38709?** Informational severity, with a CVSS score of 9.8, published 30 July 2026.

**Which products and versions are affected?** Cudy TR1200 v2.4.15; Cudy TR3000 v2.4.21; Cudy WR1200 v2.4.23; Cudy WR1300 v2.4.22; and 5 more.

**Is there a fix for CVE-2026-38709?** 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-2026-38709 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-38709?** Check whether you run Cudy TR1200, Cudy TR3000, Cudy WR1200 or one of the others listed 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 'net.set_wan' interface of several Cudy router models. The flaw is caused by insufficient sanitization of user-supplied input before it is passed to a system shell. An attacker can exploit this by sending a specially crafted request to the affected interface, leading to arbitrary code execution with root privileges. The vulnerability affects multiple firmware versions across the TR1200, TR3000, WR300, WR1200, WR1300, WR1500, WR3000, WR3600, and WR6500 product lines. Users are advised to check for firmware updates from the vendor.

## Affected products

- Cudy TR1200 v2.4.15
- Cudy TR3000 v2.4.21
- Cudy WR300 v2.4.25
- Cudy WR1200 v2.4.23
- Cudy WR1300 v2.4.22
- Cudy WR1500 v2.3.10
- Cudy WR3000 v2.4.19
- Cudy WR3600 v2.3.16
- Cudy WR6500 v2.3.15

## Timeline

- 2026-07-30: disclosed
- 2026-07-30: advisory

## References

- [https://www.cudy.com/pages/security-advisory/cudy-sa-26-7-jezzy-4](https://www.cudy.com/pages/security-advisory/cudy-sa-26-7-jezzy-4)

## Related threats

- [Cudy Routers command injection in ipsec_conn interface](https://junglewise.ai/threats/cve-2026-38713-cudy-routers-command-injection-in-ipsec-conn-interface)
- [Cudy TR1200 and TR3000 command injection in system.setclock](https://junglewise.ai/threats/cve-2026-38710-cudy-tr1200-and-tr3000-command-injection-in-system-setclock)
- [Cudy TR and WR Routers command injection in system.setclock](https://junglewise.ai/threats/cve-2026-38708-cudy-tr-and-wr-routers-command-injection-in-system-setclock)
- [Cudy TR and WR Series Routers command injection in system.upgrade_check](https://junglewise.ai/threats/cve-2026-38711-cudy-tr-and-wr-series-routers-command-injection-in-system-upgrade)