CVE-2026-2129: d-link dir-823x Command Injection

Vulnerability summary

CVE-2026-2129 is a high (CVSS 8.6) Command Injection vulnerability in d-link dir-823x. EPSS estimates a 5.02% chance of exploitation in the next 30 days, higher than 92.1% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 08-02-2026
   PublishedVulnerability first disclosed.
2. 23-02-2026
   Last modifiedVulnerability information updated.

Description

A vulnerability was found in D-Link DIR-823X 250416. Affected by this issue is some unknown functionality of the file /goform/set_ac_status. Performing a manipulation of the argument ac_ipaddr/ac_ipstatus/ap_randtime results in os command injection. The attack may be initiated remotely. The exploit has been made public and could be used.

• 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.