CVE-2026-5678 Totolink A7100RU cstecgi.cgi setScheduleCfg os command injection
Remote attackers can execute arbitrary OS commands via the setScheduleCfg function in Totolink A7100RU 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-2026-5678?
CVE-2026-5678 is a medium-severity command injection vulnerability in Totolink A7100RU, published on 6 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A weakness has been identified in Totolink A7100RU 7.4cu.2313_b20191024. The affected element is the function setScheduleCfg of the file /cgi-bin/cstecgi.cgi. Executing a manipulation of the argument mode can lead to os command injection. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks.
Which versions are affected by CVE-2026-5678?
How do I fix CVE-2026-5678?
No fix has been published for CVE-2026-5678 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-2026-5678 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-5678 exists.
Sources
Also known as GHSA-h49p-xq2j-gmrw.