CVE-2018-25120: d-link dns-343 sharecenter OS Command Injection

Vulnerability summary

CVE-2018-25120 is a critical (CVSS 9.8) OS Command Injection vulnerability in d-link dns-343 sharecenter. EPSS estimates a 9.81% chance of exploitation in the next 30 days, higher than 95.5% of scored vulnerabilities. 3 public exploits are recorded.

Timeline

1. 29-10-2025
   PublishedVulnerability first disclosed.
2. 14-05-2026
   Last modifiedVulnerability information updated.

Description

D-Link DNS-343 ShareCenter devices running firmware versions up to and including 1.05 contain a command injection vulnerability in the Mail Test functionality. The web maintenance script posts to the internal goForm endpoint '/goform/Mail_Test' and uses several form parameters directly in a call to a system email utility without proper input validation. An unauthenticated remote attacker can supply crafted form data that injects shell commands, resulting in execution as root on the device. NOTE: The DNS-343 product line has been declared end-of-life.

• CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.