Is CVE-2025-50666 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2025-50666 being exploited in the wild.

How severe is CVE-2025-50666?

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

Is there a fix for CVE-2025-50666?

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-2025-50666 attacked?

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

Am I affected by CVE-2025-50666?

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.

CVE-2025-50666: D-Link DI-8003 buffer overflow in /web_post.asp

CVE-2025-50666 · 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 crash the device. By sending a specially crafted web request, an attacker can cause the system to become unresponsive, leading to a total loss of internet connectivity and network services. Because this product has reached its end-of-life status, the manufacturer will not be releasing a fix, and it is recommended that the hardware be replaced.

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

Quick answers

Is CVE-2025-50666 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2025-50666 being exploited in the wild.
How severe is CVE-2025-50666?: 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-2025-50666?: 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-2025-50666 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2025-50666?: 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 the firmware version 16.07.26A1. The vulnerability is located in the '/web_post.asp' endpoint due to improper length validation of multiple parameters, including 'name', 'en', 'user_id', 'log', and 'time'. An unauthenticated attacker can trigger this overflow by sending a crafted HTTP GET request containing excessively long strings in these parameters. Successful exploitation leads to a denial-of-service (DoS) condition. As the DI-8003 is an End-of-Life (EoL) product, D-Link has stated that no firmware updates will be provided to address this issue.

Affected products

D-Link DI-8003 16.07.26A1

Timeline

2026-04-08: disclosed: Initial disclosure of the vulnerability.
2026-04-15: advisory: D-Link published a security announcement confirming the EoL status and lack of patches.

References

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