CVE-2026-51662 Missing authorization in n/a
Unauthenticated attackers can obtain cloud firmware check status information from TOTOLINK T6 routers via a crafted POST request.
- 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-2026-51662?
CVE-2026-51662 is a high-severity missing authorization vulnerability in n/a, published on 28 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 getCloudSrvCheckStatus function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to obtain cloud firmware check status information via sending a crafted POST request to /cgi-bin/cstecgi.cgi.
Weakness: CWE-284
Which versions are affected by CVE-2026-51662?
How do I fix CVE-2026-51662?
No fix has been published for CVE-2026-51662 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-2026-51662 being exploited?
There is no known exploitation of CVE-2026-51662 in the wild and no public exploit code.
Sources
Also known as GHSA-6hf3-gh9x-pxf6.