CVE-2026-9386 Totolink A8000RU Web Management cstecgi.cgi setLanguageCfg os command injection
Remote attackers can execute arbitrary OS commands via the setLanguageCfg function in the Totolink A8000RU web management interface.
- 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-2026-9386?
CVE-2026-9386 is a critical command injection vulnerability in Totolink A8000RU, published on 24 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability was identified in Totolink A8000RU 7.1cu.643_b20200521. Impacted is the function setLanguageCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Such manipulation of the argument lang leads to os command injection. The attack may be performed from remote. The exploit is publicly available and might be used.
Which versions are affected by CVE-2026-9386?
How do I fix CVE-2026-9386?
No fix has been published for CVE-2026-9386 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-2026-9386 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-9386 exists.
Sources
Also known as GHSA-p623-gg4q-6fv7.