CVE-2026-82616: Totolink NR1800X

Critical severity, CVSS 9.9. EPSS: 0.9% chance of exploitation in the next 30 days.

A vulnerability was found in TOTOLINK NR1800X 9.1.0u.6681_B20230703. Impacted is the function setUploadSetting of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument FileName results in stack-based buffer overflow. The attack can be executed remotely. The exploit has been made public and could be used.

Affected products

• Totolink NR1800X: version 9.1.0u.6681_B20230703 only

Published 2026-08-31. Last modified 2026-09-01.