CVE-2026-82597
HighCVSS 7.4Summary
A vulnerability was identified in TOTOLINK NR1800X 9.1.0u.6681_B20230703 in the setUssd function of /cgi-bin/cstecgi.cgi. Manipulation of the ussd argument leads to command injection. The attack can be initiated remotely and the exploit is publicly available.
Risk Assessment
Risk of remote arbitrary command execution on the device, potentially leading to full compromise of the router and interception of network traffic.
Recommendation
It is recommended to immediately update the device firmware to the latest version if available, and restrict access to the administrative interface to trusted networks only.
Other vulnerabilities in TOTOLINK NR1800X
See all- CVE-2026-7548High
A vulnerability was detected in Totolink NR1800X version 9.1.0u.6279_B20210910, affecting the function sub_41A68C in the file /cgi-bin/cstecgi.cgi. Manipulating the argument setUssd results in command injection.
- CVE-2026-1328High
A vulnerability was detected in Totolink NR1800X router version 9.1.0u.6279_B20210910. It affects the setWizardCfg function in the file /cgi-bin/cstecgi.cgi of the POST Request Handler component. Manipulating the ssid argument leads to a buffer overflow. The attack can be initiated remotely, and the exploit is publicly available.
- CVE-2026-82616Critical
A vulnerability was found in TOTOLINK NR1800X 9.1.0u.6681_B20230703 in the setUploadSetting function of /cgi-bin/cstecgi.cgi. Manipulation of the FileName argument leads to a stack-based buffer overflow. The attack can be executed remotely, and the exploit has been made public.
Original NVD description (English source)
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.