CVE-2026-30703 Command injection in n/a
Attackers can execute arbitrary commands via the web management interface of the WiFi Extender WDR201A due to improper input sanitization.
- 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-2026-30703?
CVE-2026-30703 is a critical command injection vulnerability in n/a, published on 18 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A command injection vulnerability exists in the web management interface of the WiFi Extender WDR201A (HW V2.1, FW LFMZX28040922V1.02). The adm.cgi endpoint improperly sanitizes user-supplied input provided to a command-related parameter in the sysCMD functionality.
Weakness: CWE-78
Which versions are affected by CVE-2026-30703?
How do I fix CVE-2026-30703?
No fix has been published for CVE-2026-30703 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-2026-30703 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-30703 exists.
Sources
Also known as GHSA-p9f3-6w54-ch66.