# CVE-2025-45058: D-Link DI-8300 buffer overflow in jingx_asp function

Source: https://junglewise.ai/threats/cve-2025-45058-d-link-di-8300-buffer-overflow-in-jingx-asp-function  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-04-08. Updated: 2026-07-25  
License: CC BY 4.0 with a link back

CVE-2025-45058 · Severity: high · CVSS 7.5 · Published 2026-04-08

A vulnerability has been identified in the D-Link DI-8300 enterprise router. This flaw allows a remote attacker to crash the device by sending specially crafted data to a specific internal function. An exploit would result in a denial-of-service, disrupting internet connectivity and network operations for all connected users.

Technologies: [Dlink Di-8300](https://junglewise.ai/threats/technologies/di-8300), [Dlink Di-8300 Firmware](https://junglewise.ai/threats/technologies/di-8300-firmware). Vendors: [Dlink](https://junglewise.ai/threats/vendors/dlink).

## Quick answers

**Is CVE-2025-45058 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-45058 being exploited in the wild.

**How severe is CVE-2025-45058?** High severity, with a CVSS score of 7.5, published 8 April 2026.

**Which products and versions are affected?** D-Link DI-8300 16.07.26A1.

**Is there a fix for CVE-2025-45058?** 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-2025-45058 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2025-45058?** Check whether you run Dlink Di-8300 or Dlink Di-8300 Firmware. 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 classic buffer overflow (CWE-120) exists in the D-Link DI-8300 router running firmware version 16.07.26A1. The vulnerability is located within the 'jingx_asp' function and is triggered by providing an oversized or malformed string to the 'fx' parameter. This is a network-reachable issue that does not require authentication or user interaction. Successful exploitation allows a remote attacker to cause a memory corruption that leads to a device crash or Denial of Service (DoS). While the current report focuses on DoS, buffer overflows of this nature can sometimes be leveraged for remote code execution.

## Affected products

- D-Link DI-8300 16.07.26A1

## Timeline

- 2026-04-08: disclosed: Initial disclosure date
- 2026-04-08: advisory: NVD publication date

## References

- [https://github.com/xiaotea/iot-vulnerability-collection/blob/main/README.md](https://github.com/xiaotea/iot-vulnerability-collection/blob/main/README.md)
- [https://www.dlink.com.cn/techsupport/ProductInfo.aspx?m=DI-8300](https://www.dlink.com.cn/techsupport/ProductInfo.aspx?m=DI-8300)
- [https://www.dlink.com/en/security-bulletin/](https://www.dlink.com/en/security-bulletin/)

## Related threats

- [D-Link DI-8300 buffer overflow in tgfile_htm function](https://junglewise.ai/threats/cve-2025-45059-d-link-di-8300-buffer-overflow-in-tgfile-htm-function)
- [D-Link DI-8300 buffer overflow in ip_position_asp](https://junglewise.ai/threats/cve-2025-45057-d-link-di-8300-buffer-overflow-in-ip-position-asp)