Totolink LR1200GB 9.1.0u.6619_B20230130 IMEI cstecgi.cgi sprintf command injection

Summaryinfo

A vulnerability classified as critical was found in Totolink LR1200GB 9.1.0u.6619_B20230130. This impacts the function sprintf of the file cstecgi.cgi of the component IMEI Handler. Executing a manipulation can lead to command injection. The identification of this vulnerability is CVE-2025-60687. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability has been found in Totolink LR1200GB 9.1.0u.6619_B20230130 and classified as critical. This vulnerability affects the function sprintf of the file cstecgi.cgi of the component IMEI Handler. The manipulation with an unknown input leads to a command injection vulnerability. The CWE definition for the vulnerability is CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

An unauthenticated command injection vulnerability exists in the ToToLink LR1200GB Router firmware V9.1.0u.6619_B20230130 within the cstecgi.cgi binary (sub_41EC68 function). The binary reads the "imei" parameter from a web request and verifies only that it is 15 characters long. The parameter is then directly inserted into a system command using sprintf() and executed with system(). Maliciously crafted IMEI input can execute arbitrary commands on the router without authentication.

This vulnerability was named CVE-2025-60687 since 09/26/2025. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 11/13/2025). This vulnerability is assigned to T1202 by the MITRE ATT&CK project.

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

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Productinfo

Vendor

• Totolink

Name

• LR1200GB

Version

• 9.1.0u.6619_B20230130

License

• commercial

Website

• Vendor: https://www.totolink.net/

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