# CVE-2025-71383: Dbit WIFI4 N300 management interface denial of service via malformed JSON request

Source: https://junglewise.ai/threats/cve-2025-71383-dbit-wifi4-n300-1-0-0-devices-allow-the-management-interface-to  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-06. Updated: 2026-10-06  
License: CC BY 4.0 with a link back

CVE-2025-71383 · Severity: info · Published 2026-10-06

The Dbit WIFI4 N300 is a low-cost home router that manages network settings through a web-based interface. An attacker connected to the device's local Wi-Fi network can crash this management interface by sending a specially crafted API request with missing or malformed JSON fields, causing the router's web interface to become unavailable until the device is restarted.

Vendors: [Dbit](https://junglewise.ai/threats/vendors/dbit).

## Quick answers

**Is CVE-2025-71383 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-71383 being exploited in the wild.

**How severe is CVE-2025-71383?** Informational severity, published 6 October 2026.

**Which products and versions are affected?** Dbit WIFI4 N300 1.0.0.

**Is there a fix for CVE-2025-71383?** 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-2025-71383 attacked?** It is attacked from the adjacent network, in a network appliance.

**Am I affected by CVE-2025-71383?** Check whether you run Dbit WIFI4 N300 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

The vulnerability is a denial-of-service condition in the /api/login endpoint caused by improper error handling in the device's JSON parser. When a request lacks required username or password fields, the parser crashes rather than gracefully rejecting the malformed input. The attack requires network-adjacent access (local Wi-Fi connection) but no authentication. A fix is not mentioned in the available advisory material.

## Affected products

- Dbit WIFI4 N300 1.0.0

## Timeline

- 2026-10-06: disclosed

## References

- [https://www.klogixsecurity.com/scorpion-labs-blog/anatomy-of-an-iot-exploit-from-hands-on-to-rce-folie-a-deux](https://www.klogixsecurity.com/scorpion-labs-blog/anatomy-of-an-iot-exploit-from-hands-on-to-rce-folie-a-deux)

## Related threats

- [Dbit WIFI4 N300 stack-based buffer overflow in DHCP configuration](https://junglewise.ai/threats/cve-2025-71384-dbit-wifi4-n300-1-0-0-devices-allows-administrators-from-the)