CVE-2026-7718 Totolink WA300 POST Request cstecgi.cgi setWebWlanIdx command injection
Remote attackers can execute arbitrary commands on Totolink WA300 routers via the webWlanIdx parameter in the cstecgi.cgi handler.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-7718?
CVE-2026-7718 is a medium-severity command injection vulnerability in Totolink WA300, published on 4 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was identified in Totolink WA300 5.2cu.7112_B20190227. Impacted is the function setWebWlanIdx of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. The manipulation of the argument webWlanIdx leads to command injection. The attack may be initiated remotely. The exploit is publicly available and might be used.
Which versions are affected by CVE-2026-7718?
How do I fix CVE-2026-7718?
No fix has been published for CVE-2026-7718 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-2026-7718 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-7718 exists.
Sources
Also known as GHSA-7ww3-945v-369q.