CVE-2025-7525: totolink t6_firmware Injection

Vulnerability summary

CVE-2025-7525 is a high (CVSS 8.8) Injection vulnerability in totolink t6_firmware. EPSS estimates a 2.83% chance of exploitation in the next 30 days, higher than 86.4% of scored vulnerabilities. 2 public exploits are recorded.

Timeline

1. 13-07-2025
   PublishedVulnerability first disclosed.
2. 15-07-2025
   Last modifiedVulnerability information updated.

Description

A vulnerability was found in TOTOLINK T6 4.1.5cu.748_B20211015. It has been declared as critical. This vulnerability affects the function setTracerouteCfg of the file /cgi-bin/cstecgi.cgi of the component HTTP POST Request Handler. The manipulation of the argument command leads to command injection. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

• CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.
• CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')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.