CVE-2025-50652: D-Link DI-8003 buffer overflow in /saveparm_usb.asp

CVE-2025-50652 · Severity: high · CVSS 7.5 · Published 2026-04-08

A vulnerability exists in the D-Link DI-8003 router, a device used for managing network traffic and internet connectivity. An attacker can exploit this flaw to cause the device to crash or become unresponsive, leading to a total loss of internet and network services for connected users. Because this product has reached its end-of-life status, the manufacturer will not be releasing a security patch, and it is recommended that the hardware be replaced.

Technologies: Dlink Di-8003, Dlink Di-8003 Firmware. Vendors: Dlink.

Quick answers

Is CVE-2025-50652 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2025-50652 being exploited in the wild.
How severe is CVE-2025-50652?
High severity, with a CVSS score of 7.5, published 8 April 2026.
Which products and versions are affected?
D-Link DI-8003 16.07.26A1.
Is there a fix for CVE-2025-50652?
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-2025-50652 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2025-50652?
Check whether you run Dlink Di-8003 or Dlink Di-8003 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-8003 router firmware version 16.07.26A1. The vulnerability is located in the /saveparm_usb.asp endpoint and is triggered by improper handling of the 'id' parameter. A remote, unauthenticated attacker can send a specially crafted network request to this endpoint to overflow a buffer, leading to a denial-of-service (DoS) condition. As the DI-8003 is an End-of-Life (EoL) product, D-Link has stated that no further firmware updates will be developed to address this issue.

Affected products

  • D-Link DI-8003 16.07.26A1

Timeline

  • 2026-04-08: disclosed
  • 2026-04-15: advisory: Vendor confirmed EoL status and recommended replacement.

References

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