CVE-2020-26567 Missing authorization in n/a

Medium 5.5 Published 8 Oct 2020 Updated 4 Aug 2024

Unauthenticated access to a CGI script on D-Link routers causes an immediate device reboot, resulting in a denial of service.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2020-26567?

CVE-2020-26567 is a medium-severity missing authorization vulnerability in n/a, published on 8 Oct 2020. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

An issue was discovered on D-Link DSR-250N before 3.17B devices. The CGI script upgradeStatusReboot.cgi can be accessed without authentication. Any access reboots the device, rendering it therefore unusable for several minutes.

Weakness: CWE-306

Which versions are affected by CVE-2020-26567?

It affects 1 product.

Products include Dlink Dsr-250n Firmware.

How do I fix CVE-2020-26567?

No fix has been published for CVE-2020-26567 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-2020-26567 being exploited?

There is no known exploitation of CVE-2020-26567 in the wild and no public exploit code.

Public exploit code: 1 Exploit-DB entry.

Sources

Also known as GHSA-fwxh-8jc9-j26p.