CVE-2021-42627 Missing authorization in n/a

Critical 9.8 Published 23 Aug 2022 Updated 9 Jul 2026

Unauthenticated attackers can access the WAN configuration page to view and modify network settings on D-Link DIR-615 routers.

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-2021-42627?

CVE-2021-42627 is a critical missing authorization vulnerability in n/a, published on 23 Aug 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The WAN configuration page "wan.htm" on D-Link DIR-615 devices with firmware 20.06 can be accessed directly without authentication which can lead to disclose the information about WAN settings and also leverage attacker to modify the data fields of page.

Which versions are affected by CVE-2021-42627?

It affects 4 products.

Products include Dlink Dir-615 Firmware, Dlink Dir-615 J1 Firmware, Dlink Dir-615 T1 Firmware, Dlink Dir-615jx10 Firmware.

How do I fix CVE-2021-42627?

No fix has been published for CVE-2021-42627 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-2021-42627 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-42627 exists.

Public exploit code: 1 Nuclei template.

Sources

Also known as GHSA-v9x5-7566-775w.