CVE-2026-2142 D-Link DIR-823X set_qos sub_420688 os command injection
Remote attackers can execute arbitrary OS commands on D-Link DIR-823X routers via the set_qos interface, potentially compromising the device.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-2142?
CVE-2026-2142 is a high-severity command injection vulnerability in D-Link DIR-823X, published on 8 Feb 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
A weakness has been identified in D-Link DIR-823X 250416. This vulnerability affects the function sub_420688 of the file /goform/set_qos. Executing a manipulation can lead to os command injection. The attack can be executed remotely. The exploit has been made available to the public and could be used for attacks.
Which versions are affected by CVE-2026-2142?
It affects 1 product.
Products include Dlink Dir-823x Firmware.
How do I fix CVE-2026-2142?
No fix has been published for CVE-2026-2142 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-2142 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-2142 exists.
Other vulnerabilities in D-Link DIR-823X
Sources
Also known as GHSA-4vcq-f588-9vq4.