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

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, Dlink Di-8300 Firmware. 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

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