CVE-2025-50649: D-Link DI-8003 buffer overflow in /shut_set.asp

CVE-2025-50649 · Severity: high · CVSS 7.5 · Published 2026-04-08

A security vulnerability has been identified in the D-Link DI-8003 router that could allow an attacker to disrupt the device's operations. By sending specially crafted data to the router's management interface, an attacker can cause the system to crash or become unresponsive, leading to a loss of internet connectivity. This product has reached its end-of-life status, meaning the manufacturer will not be providing a security patch to fix this issue.

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

Quick answers

Is CVE-2025-50649 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2025-50649 being exploited in the wild.
How severe is CVE-2025-50649?
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-2025-50649?
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-2025-50649 attacked?
It is attacked over the network.
Am I affected by CVE-2025-50649?
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, specifically within firmware version 16.07.26A1. The vulnerability is located in the /shut_set.asp endpoint and is caused by improper input validation of the 'vlan_name' parameter. A remote, unauthenticated attacker can exploit this by sending a crafted HTTP request with an overly long string in the affected parameter, leading to memory corruption. Successful exploitation results in a denial-of-service (DoS) condition. As the DI-8003 is an End-of-Life (EoL) product, D-Link has indicated that no firmware updates will be released to address this flaw.

Affected products

  • D-Link DI-8003 16.07.26A1

Timeline

  • 2026-04-08: disclosed: Initial disclosure date
  • 2026-04-15: advisory: Vendor advisory published confirming EoL status

References

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