Is CVE-2025-45059 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2025-45059 being exploited in the wild.

How severe is CVE-2025-45059?

High severity, with a CVSS score of 7.5, published 8 April 2026.

Is there a fix for CVE-2025-45059?

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-2025-45059 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2025-45059?

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.

CVE-2025-45059: D-Link DI-8300 buffer overflow in tgfile_htm function

CVE-2025-45059 · Severity: high · CVSS 7.5 · Published 2026-04-08

A security vulnerability has been identified in the D-Link DI-8300 enterprise router. This flaw allows an attacker to crash the device by sending a specially crafted request, leading to a complete loss of network connectivity for the business. This disruption can halt operations and prevent users from accessing critical online services until the device is manually recovered.

Technologies: Dlink Di-8300, Dlink Di-8300 Firmware. Vendors: Dlink.

Quick answers

Is CVE-2025-45059 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2025-45059 being exploited in the wild.
How severe is CVE-2025-45059?: 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-2025-45059?: 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-2025-45059 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2025-45059?: 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 'tgfile_htm' function and is triggered by providing an overly long string to the 'fn' parameter. An unauthenticated attacker can exploit this over the network to cause a memory corruption that results in a device crash or Denial of Service (DoS). While the current report focuses on availability impact, buffer overflows can sometimes be leveraged for remote code execution depending on the system architecture. No specific patch version was confirmed in the advisory, though users are encouraged to check D-Link's security bulletin for updates.

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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