CVE-2026-90703 D-Link DWR-M921 formDiskCreateShare system os command injection
Remote attackers can execute arbitrary OS commands on D-Link DWR-M921 routers via the formDiskCreateShare interface.
- 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-2026-90703?
CVE-2026-90703 is a critical command injection vulnerability in D-Link DWR-M921, published on 14 Sep 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
A vulnerability has been found in D-Link DWR-M921 1.1.52. The affected element is the function system of the file /boafrm/formDiskCreateShare. Such manipulation of the argument folderpath leads to os command injection. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.
Which versions are affected by CVE-2026-90703?
How do I fix CVE-2026-90703?
No fix has been published for CVE-2026-90703 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-2026-90703 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-90703 exists.
Sources
Also known as GHSA-89fx-gf5c-99rg.