CVE-2026-15701
CriticalCVSS 9.8Exploitation Probability (EPSS)
Elevated risk52th percentile - higher than 52% of all known CVEs
Summary
A vulnerability has been found in Totolink NR1800X firmware version 9.1.0u.6279_B20210910 in the Form_Logout function of the /formLogout.htm file within the lighttpd component. Manipulation of the Host argument causes a stack-based buffer overflow, which can be exploited remotely.
Risk Assessment
An attacker can remotely take control of the device, leading to network integrity and availability breaches and potential data interception.
Recommendation
Immediately update the Totolink NR1800X firmware to the latest version if a patch is available, or consider replacing the device with one not affected by this vulnerability.
Original NVD description (English source)
A weakness has been identified in Totolink NR1800X 9.1.0u.6279_B20210910. Affected by this issue is the function Form_Logout of the file /formLogout.htm of the component lighttpd. This manipulation of the argument Host causes stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be used for attacks.