CVE-2026-4180 D-Link DIR-816 goahead redirect.asp access control

Medium 6.9 Published 15 Mar 2026 Updated 17 Mar 2026

Remote attackers can bypass access controls on the D-Link DIR-816 router via the redirect.asp component, affecting unsupported devices.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-4180?

CVE-2026-4180 is a medium-severity missing authorization vulnerability in Dlink Dir-816 Firmware, published on 15 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability was identified in D-Link DIR-816 1.10CNB05. The impacted element is an unknown function of the file redirect.asp of the component goahead. The manipulation of the argument token_id leads to improper access controls. The attack may be initiated remotely. The exploit is publicly available and might be used. This vulnerability only affects products that are no longer supported by the maintainer.

Weakness: CWE-284, CWE-266

Which versions are affected by CVE-2026-4180?

It affects 1 product.

Products include Dlink Dir-816 Firmware.

How do I fix CVE-2026-4180?

No fix has been published for CVE-2026-4180 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2026-4180 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-4180 exists.

All Dlink Dir-816 Firmware vulnerabilities

Sources

Also known as GHSA-6ggg-vqm9-w733.