CVE-2026-2084: d-link dir-823x Command Injection

Vulnerability summary

CVE-2026-2084 is a high (CVSS 8.6) Command Injection vulnerability in d-link dir-823x. EPSS estimates a 4.62% chance of exploitation in the next 30 days, higher than 91.5% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 07-02-2026
   PublishedVulnerability first disclosed.
2. 23-02-2026
   Last modifiedVulnerability information updated.

Description

A weakness has been identified in D-Link DIR-823X 250416. This impacts an unknown function of the file /goform/set_language. Executing a manipulation of the argument langSelection can lead to os command injection. It is possible to launch the attack remotely. The exploit has been made available to the public and could be used for attacks.

• 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.
• 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.