8.8
Advisory Published
Advisory Published

ZDI-23-1826: D-Link G416 httpd API-AUTH Digest Processing Stack-based Buffer Overflow Remote Code Execution Vulnerability

First published: Wed Dec 20 2023(Updated: )

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link G416 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the HTTP service listening on TCP port 80. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root.

Affected SoftwareAffected VersionHow to fix
D-Link G416

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Frequently Asked Questions

  • What is the severity of ZDI-23-1826?

    The severity of ZDI-23-1826 is critical due to the potential for arbitrary code execution by unauthenticated attackers.

  • How do I fix ZDI-23-1826?

    To fix ZDI-23-1826, users should apply the latest firmware update provided by D-Link for the G416 router.

  • Who is affected by ZDI-23-1826?

    ZDI-23-1826 affects all installations of the D-Link G416 router that have the vulnerable HTTP service.

  • Can ZDI-23-1826 be exploited remotely?

    Yes, ZDI-23-1826 can be exploited remotely by network-adjacent attackers without the need for authentication.

  • What type of vulnerability is ZDI-23-1826?

    ZDI-23-1826 is a remote code execution vulnerability caused by flaws in the HTTP service on TCP port 80.

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2025 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203