CVE-2026-82555 TOTOLINK N600R Authentication cstecgi.cgi loginAuth random values
Attackers can bypass authentication on TOTOLINK N600R routers due to insufficiently random values in the login process.
- 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-2026-82555?
CVE-2026-82555 is a medium-severity vulnerability in TOTOLINK N600R, published on 30 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability has been found in TOTOLINK N600R 4.3.0cu.7866_B20220506. This vulnerability affects the function loginAuth of the file /web_cste/cgi-bin/cstecgi.cgi of the component Authentication Handler. Such manipulation leads to insufficiently random values. It is possible to launch the attack remotely. This attack is characterized by high complexity. It is stated that the exploitability is difficult. The exploit has been disclosed to the public and may be used.
Which versions are affected by CVE-2026-82555?
How do I fix CVE-2026-82555?
No fix has been published for CVE-2026-82555 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-82555 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-82555 exists.
Sources
Also known as GHSA-ph8r-m79f-q97v.