CVE-2025-9935 TOTOLINK N600R cstecgi.cgi sub_4159F8 command injection
Remote attackers can execute arbitrary commands on TOTOLINK N600R routers via a command injection vulnerability in the web 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-2025-9935?
CVE-2025-9935 is a medium-severity command injection vulnerability in TOTOLINK N600R, published on 3 Sep 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability was determined in TOTOLINK N600R 4.3.0cu.7866_B20220506. This vulnerability affects the function sub_4159F8 of the file /web_cste/cgi-bin/cstecgi.cgi. Executing manipulation can lead to command injection. The attack can be executed remotely. The exploit has been publicly disclosed and may be utilized.
Which versions are affected by CVE-2025-9935?
It affects 1 product.
Products include Totolink N600r Firmware.
How do I fix CVE-2025-9935?
No fix has been published for CVE-2025-9935 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-2025-9935 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-9935 exists.
Other vulnerabilities in TOTOLINK N600R
Sources
Also known as GHSA-9f5w-jc5j-mr6j.