CVE-2026-9511 Totolink CA750-PoE Setting cstecgi.cgi setWebWlanIdx os command injection
Remote attackers can execute arbitrary OS commands via the webWlanIdx parameter in the CA750-PoE switch's setting 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-2026-9511?
CVE-2026-9511 is a medium-severity command injection vulnerability in Totolink CA750-PoE, published on 25 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 CA750-PoE 6.2c.510. This affects the function setWebWlanIdx of the file /cgi-bin/cstecgi.cgi of the component Setting Handler. Such manipulation of the argument webWlanIdx leads to os command injection. It is possible to launch the attack remotely. The exploit is publicly available and might be used.
Which versions are affected by CVE-2026-9511?
How do I fix CVE-2026-9511?
No fix has been published for CVE-2026-9511 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-2026-9511 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-9511 exists.
Sources
Also known as GHSA-wv96-774q-mh29.