CVE-2026-82597 TOTOLINK NR1800X cstecgi.cgi setUssd command injection
Remote attackers can execute arbitrary commands on TOTOLINK NR1800X routers via the setUssd function in cstecgi.cgi.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-82597?
CVE-2026-82597 is a medium-severity command injection vulnerability in TOTOLINK NR1800X, published on 31 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was identified in TOTOLINK NR1800X 9.1.0u.6681_B20230703. This affects the function setUssd of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument ussd leads to command injection. The attack can be initiated remotely. The exploit is publicly available and might be used.
Which versions are affected by CVE-2026-82597?
How do I fix CVE-2026-82597?
No fix has been published for CVE-2026-82597 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-2026-82597 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-82597 exists.
Sources
Also known as GHSA-38w2-fwq3-3gp5.