CVE-2026-51692 Missing authorization in n/a
Unauthenticated attackers can modify guest wireless settings on TOTOLINK T6 routers via a crafted POST request, bypassing access controls.
- 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-2026-51692?
CVE-2026-51692 is a critical missing authorization vulnerability in n/a, published on 31 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Incorrect access control in the setWiFiGuestCfg function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to establish or weaken guest wireless access via sending a crafted POST request to /cgi-bin/cstecgi.cgi.
Weakness: CWE-284
Which versions are affected by CVE-2026-51692?
How do I fix CVE-2026-51692?
No fix has been published for CVE-2026-51692 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-51692 being exploited?
There is no known exploitation of CVE-2026-51692 in the wild and no public exploit code.
Sources
Also known as GHSA-2x6c-v7m7-w2w9.