CVE-2022-43622 Memory corruption in DIR-1935

High 8.8 Published 29 Mar 2023 Updated 18 Feb 2025

Network-adjacent attackers can execute arbitrary code as root on D-Link DIR-1935 routers via a stack buffer overflow in the web management portal.

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

What is CVE-2022-43622?

CVE-2022-43622 is a high-severity memory corruption vulnerability in D-Link DIR-1935, published on 29 Mar 2023. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DIR-1935 1.03 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of Login requests to the web management portal. When parsing the HNAP_AUTH header, the process does not properly validate 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. Was ZDI-CAN-16139.

Weakness: CWE-121

Which versions are affected by CVE-2022-43622?

It affects 1 product.

Products include Dlink Dir-1935 Firmware.

How do I fix CVE-2022-43622?

No fix has been published for CVE-2022-43622 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2022-43622 being exploited?

There is no known exploitation of CVE-2022-43622 in the wild and no public exploit code.

Sources

Also known as GHSA-94w7-67qp-92gp.