CVE-2026-9454 Totolink A8000RU Web Management cstecgi.cgi setOpenVpnCertGenerationCfg os command injection
Remote attackers can execute arbitrary OS commands via the servername parameter in the web management interface of Totolink A8000RU routers.
- 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-2026-9454?
CVE-2026-9454 is a critical command injection vulnerability in Totolink A8000RU, published on 25 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A flaw has been found in Totolink A8000RU 7.1cu.643_b20200521. This vulnerability affects the function setOpenVpnCertGenerationCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Executing a manipulation of the argument servername can lead to os command injection. The attack may be launched remotely. The exploit has been published and may be used.
Which versions are affected by CVE-2026-9454?
How do I fix CVE-2026-9454?
No fix has been published for CVE-2026-9454 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-2026-9454 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-9454 exists.
Sources
Also known as GHSA-3h6x-px3r-wh95.