CVE-2025-60688
MediumCVSS 6.5Exploitation Probability (EPSS)
Low risk38th percentile - higher than 38% of all known CVEs
Summary
A stack buffer overflow vulnerability was found in the setDefResponse function of the cstecgi.cgi binary in ToToLink LR1200GB and NR1800X routers. An unauthenticated attacker can send a crafted "IpAddress" parameter, causing a buffer overflow that may lead to arbitrary code execution.
Risk Assessment
The risk includes remote code execution on the router without authentication, potentially allowing an attacker to alter network settings, intercept traffic, or use the device as a gateway into the organization's internal network.
Recommendation
Immediately update the firmware of ToToLink LR1200GB and NR1800X routers to the latest version provided by the vendor. As a temporary measure, restrict management interface access to trusted IP addresses only.
Original NVD description (English source)
A stack buffer overflow vulnerability exists in the ToToLink LR1200GB (V9.1.0u.6619_B20230130) and NR1800X (V9.1.0u.6681_B20230703) Router firmware within the cstecgi.cgi binary (setDefResponse function). The binary reads the "IpAddress" parameter from a web request and copies it into a fixed-size stack buffer using strcpy() without any length validation. Maliciously crafted input can overflow the buffer, leading to potential arbitrary code execution or memory corruption, without requiring authentication.