CVE-2026-5976 Totolink A7100RU CGI cstecgi.cgi setStorageCfg os command injection
Remote attackers can execute arbitrary OS commands on Totolink A7100RU routers via the setStorageCfg function in cstecgi.cgi.
- 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-2026-5976?
CVE-2026-5976 is a critical command injection vulnerability in Totolink A7100RU, published on 9 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A security flaw has been discovered in Totolink A7100RU 7.4cu.2313_b20191024. This affects the function setStorageCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Performing a manipulation of the argument sambaEnabled results in os command injection. It is possible to initiate the attack remotely. The exploit has been released to the public and may be used for attacks.
Which versions are affected by CVE-2026-5976?
How do I fix CVE-2026-5976?
No fix has been published for CVE-2026-5976 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-2026-5976 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-5976 exists.
Sources
Also known as GHSA-6vcj-hp8j-m72g.