Totolink LR1200GB/NR1800X 9.1.0u cstecgi.cgi strcpy IpAddress stack-based overflow

Summaryinfo

A vulnerability categorized as critical has been discovered in Totolink LR1200GB and NR1800X 9.1.0u. This vulnerability affects the function strcpy of the file cstecgi.cgi. Executing a manipulation of the argument IpAddress can lead to stack-based overflow. This vulnerability appears as CVE-2025-60688. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in Totolink LR1200GB and NR1800X 9.1.0u. It has been declared as critical. This vulnerability affects the function strcpy of the file cstecgi.cgi. The manipulation of the argument IpAddress with an unknown input leads to a stack-based overflow vulnerability. The CWE definition for the vulnerability is CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

This vulnerability was named CVE-2025-60688 since 09/26/2025. The exploitation appears to be easy. The attack can be initiated remotely. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 11/13/2025).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• Totolink

Name

• LR1200GB
• NR1800X

Version

• 9.1.0u

License

• commercial

Website

• Vendor: https://www.totolink.net/

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Discussion